Mokuba's Babysitter Pt.2

"That went more smoothly than last week." The blonde bombshell commented as she entered the younger Kaiba brother's room, relieved that she didn't have to deal with the awkwardness of talking to Seto again.

"Yeah," Mokuba replied sheepishly, "I told Seto that you were helping me test out a new product for Kaiba Corp."

"Hmm, I guess that explains why I had to give my measurements to that tailor who called me a few days ago." Mai thought aloud as she towered over the boy. "So, what exactly did you tell your brother I'd be testing?"

"I had to think about it for a while, but I eventually thought up a new suit that could be used to enter his VR program." The boy explained, shifting in place on his bed, obviously ready for things to start.

"Great cover story, kid." Mai smiled, gazing down at the boy genius. "I hope you guys actually make it. Getting trapped in that horrible VR pod was one of the worst experiences of my life."

"The pod was just a prototype." Mokuba said, his eyes looking over Mai; he couldn't wait for her to spank him and put him back into diapers where he belonged. "He's been experimenting with some type of helmet, like all the other companies are doing, but we can't settle for being like everyone else! We're Kaiba Corp! We gotta be the best!"

"You're right." Mai agreed before her smile turned into a frown. "But where is your diaper?! Just because you did your homework and helped your brother doesn't mean you're allowed to go to bed without wearing protection!"

Mokuba shivered underneath her stern gaze; this was exactly the feeling that had been missing everytime he revisited the events of the previous week! No matter how hard he fantasized, he couldn't recapture this feeling. She made him feel so small, so helpless, so childish!

"I'm sorry, Miss Mai." Mokuba apologized, his entire body tingling with anticipation as he gazed up at the blonde bombshell. "I was so busy with my homework that I must've forgotten to put on the diaper."

"Your diaper!" Mai corrected, watching the boy squirm due to the forceful way she spoke to him. "If you can't remember to properly dress yourself for bed then I better remind you what happens to bad little boys who don't listen to their nanny!"

"Please don't, Miss Mai!" Mokuba pleaded, falling into the role without even trying to fake being afraid or subservient; she brought it out of him with her commanding presence and voice.

"Begging will only make it worse, young man." Mai retorted as she reached out and pulled the boy off of the bed with a swift tug of his arm.

Mokuba was stunned as he was pulled to his feet by Mai. The boy stood in place, his entire body tingling with excitement as the blonde started to undress him. He stood there in silence as she untied his shoes, pulled them one by one from his feet before his pants joined the discarded sneakers on the floor. He was ordered to raise his arms into the air so that his shirt could be removed, but in virtually a blink of an eye the boy found himself standing there in nothing but his underwear!

Mokuba watched Mai pull a diaper from the bag by his nightstand which he had left out for her. He found himself compelled to watch her spread the large designer diaper out onto his bed, the once folded up rectangle taking on an hourglass she. Just the thought that she would soon be taping him into such a big diaper made his heart skip a beat. He clasped his hands in front of his underwear, patiently waiting for what was about to happen next.

Before Mokuba knew it, he saw Mai appear in front of him and felt her hands push down onto his shoulders, forcing him to lay back onto his bed. He didn't resist as his butt came to rest on the soft comfortable diaper laying spread out on his bed. The fact that he was only dressed in a pair of tighty whities made him blush, the subtlest of red hues spreading across his tan face due to being stripped and manhandled by such a beautiful woman like Mai. Her sensual perfume wafting around his face was as impossible to ignore as her breasts that were hanging so close to his face he could kiss them as she grabbed his underwear by the waistband and swiftly tugged it down his legs.

Mokuba watched his underwear go sailing through the air as Mai chuckled to herself and grabbed him by his ankles. He felt her yank his feet into the air without warning and found himself watching her intently as she reached for the lotion which was all a part of his plan. 'When she's done rubbing in the lotion I'll grab- ummf." The boy's scheming thoughts were shattered by Mai's soft hands caressing his plump bottom with the lotion he had purchased just for this occasion. It was difficult to focus on anything but her gentle touch massaging the cool lotion into his skin as her potent perfume was inhaled through his nose. The boy had never taken a sip of an alcoholic beverage, but at that moment he felt like he must've been drunk from the intoxicating aroma of her perfume. His body quivered underneath every motion she made, her manicured fingernails sliding over every inch of his butt, causing him to become quite erect.

An absent minded moan slipped through Mokuba's lips as he was being prepared for his new diaper. Mai took notice of this and smiled, knowing that she was making the boy happy. Last week, this entire thing had been so baffling to her. Sure, she had an idea of what was going on, certainly, but now she understood just how much the hardships that Mokuba had endured at the orphanage had affected him; They shaped not only his character but his sexual desires. She knew deep down that the boy would always struggle to find someone who would care for him as he wanted. If he didn't have money she would've never humored him! What woman would? So, she would do her best to make his dream a reality for the next five or ten minutes before taking off.

"Knock that off, you naughty boy!" Mai ordered, her thoughts going back to the job at hand. She knew this was exactly what he wanted; to recreate the degrading abuse he had suffered through all those years ago.

"Sorry, Miss Mai!" Mokuba apologized, his face blazing bright red as his penis stood firmly in the air.

"If you behave I might skip your bedtime spanking." Mai replied, knowing full well that the boy would only act up, thus giving her the opportunity to spank him and get this whole thing over with.

"Thank you, Miss Mai!" Mokuba smiled, a devious glint in the normally docile boy's eye.

Mai tried not to laugh, the little brat was telegraphing his next move like a first time duelist. It was funny how such a smart person could be so stupid. She continued to carefully spread the lotion around his cock and balls, doing her best to not actually touch Mokuba's raging cock. 'I might be paid to diaper and spank your ass, but there's no way I'm going to jack you off!'

Mokuba laid there underneath the enormous designer diaper, his throbbing erection standing attention for both of them to see, but Mai was studiously doing her best to ignore it. As she gradually moved her hands onto his hairless pubic mound the boy suddenly had enacted his plan.

"Mai!" Mokuba called out innocently, "I think you forgot my pee pee!"

Mai scoffed, trying to contain her growing annoyance. "I guess I did."

What came next was either blatantly obvious or masterfully executed, it depended entirely upon who you were talking to, but Mokuba reached out for the tube of lotion to give it to Mai and "accidentally" squeezed it in between his clenched hands, spraying Mai's trademark blouse, purple jacket and skirt in a torrent of white cream much to the blonde's shock. Mai froze in place, staring down at herself in disbelief as virtually every article of clothing she wore was now covered in ropes of moisturizing cream!

"Mokuba?!" Mai shouted in disbelief. "How could you?!"

"I'm sorry, Mai!" Mokuba feigned ignorance, trying to act like he didn't do it on purpose. "I was just trying to help!"

"Screwing everything up and spraying me with lotion is a funny way of helping!" Mai barked back, legitimately pissed off.

"I didn't mean to." Mokuba fluttered his eyes, looking like he was on the verge of tears.

Mai took a deep breath, doing her best to control her anger until she sighed. "I know you did that because you're trying to get me to spank you, and don't you worry about that; your ass is getting spanked!" Mai paused, seeing how Mokuba's face lit up. "But I don't feel comfortable doing that naked."

"If you want, I could have one of the servants bring you a new outfit while they clean your clothes?" Mokuba offered, seemingly doing his best to remedy the situation.

"And, let me guess, you want me to dress like one of your maids?" Mai wondered aloud, suddenly everything clicking into place.

"No, but that isn't a bad idea." The mischievous little brat replied, his eyes sparkling with the limitless opportunities Mai had just presented to him. "Maybe we can do that next time?"

"Ugh- Fine!" Mai fumed. "Anything is better than standing here in these wet clothes!"

With that said, Mokuba grabbed the phone on his nightstand and called the servant's quarters. Wasting no time, he directed one of his maids to precure Mai a new set of clothing while simultaneously telling them to come pick up Mai's clothes so that they could be cleaned. After he hung up the phone, the boy got out of bed and looked around for his pants which he quickly found and pulled up his legs. He was putting on his shirt just as one of his servants started to knock on the door.

While Mokuba was on the phone Mai had ducked into the boy's private bathroom. In any other situation the blonde would've marveled at the opulence of the boy's bathing room, but she was in a rush to get undressed. Not wanting to spend another moment in her lotioned covered clothes she quickly dropped her jacket and pulled down her skirt, stepping out of it and dropping it into the small pile that was forming on the tiled floor.

By the time she was finished taking off her clothes, she heard someone knock on the door. "Mistress Mai," a feminine voice spoke to her from the other side of the door, "I'm here to collect your clothing and give you this."

Mai picked up her discarded clothing and cracked the bathroom door just enough to allow her to give the maid her clothes. In return, the woman accepted them and passed her back a hanger. Mai was so busy exchanging her clothes for what the maid was holding that she didn't even see what she had been given until she shut the door and held up the hanger. What Mokuba had ordered the maid to give her caught the blonde bombshell completely off guard! Hanging from the hanger was the last thing she expected to see: a pair of nylon stockings, a black thong and a matching black bra!

"The things I do for money." Mai sighed, exasperated by this turn of events as she pulled down her white pair of panties.

'This was supposed to be a simple job unlike last week! Spank the brat, diaper him and put him to bed!' The annoyed blonde duelist thought to herself while she pulled the black thong up her milky thighs, tugging it slightly to ensure it covered everything in between her legs despite the thin garment sliding up her ass.

'But no! He had to be a little shit and spray me with lotion! For what? To trick me into wearing this ridiculous lingerie' Mai seethed, her thoughts bitter about the boy getting the better of her as she guided the tan nylon stocking up her right leg.

'I don't care if he gets off on it; I'm going to give him a spanking that he's never going to forget!' Mai vowed to herself as her hands pulled the other stocking up her left leg.

'It doesn't matter what I wear, he's just a spoiled rich kid. I'm the one in control!' A growing grin grew on Mai's until it became a triumphant smile. She caressed the nylon material, pulling it taut before attaching each clip onto the steel loop built into the strap of the black thong hugging her thigh.

Mai threw her long locks of blonde hair back, straightening out her upper body as she reached for the back of her white bra with her hands and found the clip. She effortlessly unclasped the bra, letting it drop to her feet as her large breasts heaved forward upon being freed from their silken imprisonment. Not wanting to stand around topless in the kid's bathroom, Mai grabbed the black bra and pulled it over her chest, each breast fitting perfectly into each cup as if the garment was tailored for her. 'They were.' Mai rolled her eyes, remembering how the little brat had gotten her measurements from her.

The outfit was a bit more elaborate than the lingerie she was used to wearing but it served the same exact purpose. It attached into a rather interesting metallic necklace composed of small metal rings that framed her neckline. They were cold to the touch as they laid over her shoulders until each strand of ste joined into a larger ring. From this ring another strip of metal plunged between her breasts, connecting the necklace into the bra. Once Mai had finished fiddling with the necklace, attaching it into the matching black bra she took a step back from the counter and admired herself in the mirror.

'I have to admit, the brat has good taste;I I look hot in this!' Mai couldn't help but smirk at her reflection.

She turned away from the mirror, and was just about to grab the doorknob, when her stocking covered foot touched one of the high heels that came with the outfit.

"Oh," she murmured to herself as she picked up one of the patent black stilettos and slipped it onto her foot. She repeated this with the other foot, sliding the shining black latex stiletto on.

"Let's do this!" Mai said to herself, adjusting her chest one last time before opening the door and stepping into the boy's bedroom.

Mokuba looked up from the disposable diaper laid out on his bed. He had been trying to picture just what Mai would look like in the lingerie while she was getting dressed, but nothing could prepare him for the vision that had emerged from his bathroom! The first thing that caught his attention was the sight of her nylon clad legs as the boy's eyes slowly traveled up the approaching woman's body. Her black thong did more than hold up the stockings, the way it formed a "v" accentuated her legs, showing off her perfect hips while drawing the eye in between her legs where Mokuba dared not dream to venture. He tore his inquisitive gaze away from her lower body and found himself staring at her impressive tits which were now only a few feet away from where he sat naked on the bed.

Just the way she walked took Mokuba's breath away. He had known Mai would look incredible in this lingerie and stockings which was why he had it specially designed for the blonde duelist, but this was better than anything he could've possibly imagined!

"You've been a very naughty boy and need to be spanked!" Mai declared in a no nonsense tone of voice as she observed the naked boy sitting on his bed. She didn't care how cliche or cheesy it sounded; she was going to spank the brat's backside until her hand hurt!

Mokuba froze in place as a shiver of electricity ran its way up the boy's back. It was obvious that Mai was pissed off, but that only seemed to turn him on more! He was barely able to process his thoughts when Mai yanked him off of the bed and took her seat where he had just been sitting.

"Thank you for warming up the bed." Mai smirked at Mokuba. "Let's see if I can return the favor."

Mokuba was at a loss for words as he gazed at the most beautiful woman he had ever seen. She was still the same old Mai Valentine who had spanked and diapered him the previous week, but there was something different about her. It wasn't just how the lingerie amplified her natural beauty; there was something different about how she spoke and carried herself. Before Mokuba could continue with that line of thought he was interrupted by Mai's beautifully commanding voice.

"You know the drill. Get over my knees, face down and butt up!" Mai ordered in a strict tone.

Blushing, Mokuba complied by lowering himself face forward until his stomach rested firmly across her thighs. He felt the blonde shifting her legs, spreading them slightly as he was laying on her lap. With only the subtlest raise of her leg he felt his bottom rising up high over her right thigh, forcing his naked belly to push into her nylon stockings. They felt scratchy against his soft skin, but that wasn't the only thing he noticed; He could feel both of his legs dangling in the air while his feet hovered just above the floor. In this position, Mokuba knew that he was powerless to prevent his punishment from being carried out.

The younger Kaiba was well acquainted with feeling powerless from all the spankings he had endured during his time at the orphanage, but now he was the one literally paying for them; paying to feel small and helpless. Paying to be at the mercy of another beautiful woman who treated him like the naughty child he was. After everything Mai had done to him the previous week, he knew he was addicted to her firm hand and how she always seemed to know exactly what he needed.

This realization, the truth of why he had invited her back to his room, caused him to shiver in excitement as the growing apprehension of waiting for that very first smack to land on his bare buttocks fueled his arousal. His already warm face grew hot upon feeling his rapidly growing erection poking into the space between Mai's nylon covered thighs. He could only hope that she didn't notice his rock hard cock; the last thing he wanted to do was drive Mai away.

"Such a naughty little brat." Her voice sliced through the anxious thoughts plaguing him. "You better not wet yourself on my lap!"

Mokuba held his breath as her delicate hand traced the contours of his plump posterior, teasing him before it left his flesh. He looked at the floor, his body quivering in anticipation until her hand landed against his defenseless bottom, cracking across the skin with a silence shattering blow. Mokuba wiggled slightly from the intensity of the strike, subconsciously exhaling just before she repeated herself. Another swift spank struck the center of his bottom, making him draw in a breath from the rapidly growing burn enveloping his ass. The boy barely had a second to process the initial two strikes due to the furious pace Mai was working herself into. Another opened palm slap hit his bouncing bottom and then another and another. Again and again her hand kept striking him, alternating cheeks, never hitting the same exact spot.

Unlike last week, he did his very best to stay still no matter how much each smack stung; he wanted to savor everything he was feeling by drawing out the spanking for as long as possible no matter how red his ass became. However, what the mind wanted and the body could endure were two entirely different things. Roughly twenty seconds into the spanking his backside was already crying out in agony, burning as hot as asphalt on a summer afternoon. After about forty seconds each smack to his bottom was making his legs spasm slightly, causing him to jolt forward from each spank. The growing fire raining down onto his bottom was making him squirm like crazy; She was really pissed off!

In the future, Mokuba would play back this spanking constantly, trying to picture himself lying over the lap of a powerful and angry older woman, helplessly taking blow after blow that she was giving him, punishing him for spraying her with his baby lotion. The fact that he was literally at her mercy and there was nothing he could do to stop her was driving him absolutely wild!

The boy was so turned on that he had lost count of the spanks, but somehow, somewhere in between the agonizing pain he was feeling and the breath taking pleasure his erection sliding around in between Mai's thighs was giving him, he noticed that the spanking was slowly winding down. Each swift slap was becoming more spaced out and deliberate; he could tell that she was strategically targeting areas of his ass that were beating red, focusing her blows to maximize the pain. With each consecutive spank Mokuba began to break down, whining and utter nonsensical gibberish after every time the blonde's firm hand connected with his throbbing flesh.

The last half dozen slaps Mai delivered to the boy's tender tush were even more brutal, forcing Mokuba to start pleading with his new mistress in between pain filled yelps. Mai ignored him, continuing to spank him directly on the bottom of his butt, knowing that every time he sat down in the future he would be reminded of this spanking. She couldn't help but notice his raging erection which was now rubbing against both of her thighs. Mai paused momentarily and immediately felt the slightest bit of wetness clinging to her nylons, piercing through the thin veil of fabric and collecting on her skin.

"Did you wet yourself?!" Mai exclaimed, adding in one final slap to his throbbing backside.

Mokuba lay silent over the blonde's lap, not daring to move a muscle as his lungs heaved and his eyes watered. He was worried that he may have leaked on her during the spanking, but could feel his throbbing penis twitching in between the blonde's thighs, demanding attention. The aching emanating from his teased boyhood told him that he hadn't exploded all over her which was a most welcomed relief. As some of the anxiety that came from Mai's words washed away, he could no longer ignore the ever present stinging coming from his tortured flesh. All he could focus on was the near constant flashes of heat that radiated from his bottom until he felt Mai's hands underneath his shoulders, guiding him off of her lap.

Mokuba stood there in front of Mai, watching her inspect her tan nylon covered thighs. It felt like an eternity standing there in silence with hands covering his erection.

"Hmm, you're lucky; it felt a lot worse than it really is." The blonde remarked, taking her hands away from the insides of her legs. "But that doesn't mean you're not going to be punished for this!"

"Punished?!" Mokuba cried out, his bottom winced unintentionally. Deep down the boy hated how much he loved being at the mercy of Mai's right hand and knew that he would eagerly beg for another spanking until he came. Just the idea of getting another spanking made his heart flutter, but the all too familiar flicker of intense heat coming from his freshly punished ass reminded him that he couldn't possibly handle another spanking so soon after enduring the one Mai had just put him through. "But you just spanked me!"

A laugh escaped from Mai's mouth as she looked at him. "I'm not stupid, Mokuba. I know getting spanked isn't a punishment for you; Look at how excited you are!"

Mokuba lowered his head, not wanting to look Mai in the eyes while looking down at his protruding penis; he knew just how right she was. The only question on his mind was how was she going to punish him? He silently prayed that she wouldn't leave him tucked in his bed while trapped in another dirty diaper again! Laying in that mess, and having to clean it up, far outweighed any of the positives he experienced before pooping himself. Just thinking back on that event made him gush. The way she inserted the suppositories into him was rather stimulating, but the aftermath wasn't exactly as enjoyable. If he could figure out a way to trick Mai into playing with his ass, and make it seem like she was punishing him, they'd both be happy.

In what could only be described as a pure "eureka" moment, Mokuba remembered that he had left a few different items lying on his dresser next to the diaper that now laid spread out beside him. The most exciting of all the toys he had procured during the past week was an old fashioned glass thermometer that was an exact replica of the one the women running the orphanage used to use on him whenever he was feeling under the weather.

"Umm, maybe we could cut this short, Mai." Mokuba offered before elaborating with a weak cough, "I don't feel good."

Mai raised an eyebrow, looking over the boy suspiciously. "You were fine when I got here."

"It must've been something I ate." Mokuba offered desperately, holding his tiny tummy with his hands.

"If that's the case I'll just tape you into your diaper and let your body do the rest." Mai smirked, her hands on her hips, as she stared down at the boy, knowing that he was full of shit.

"No! Don't do that!" The black haired boy begged. "I'm really sick! My head feels hot too!"

"I bet it doesn't feel as hot as your ass." The blonde muttered to herself before looking around the room, searching for anything she could use to spank the boy with.

"What?" Mokuba couldn't help but ask.

"What's all this?" Mai wondered out loud with a false sense of wonder, ignoring Mokuba as she approached the nightstand. She looked over the tabletop, glancing at the red bag and the oddly shaped rubber stopper until her eyes settled on the long glass cylinder. A mischievous glint sparkled in her eyes as she picked it up and examined it between her fingers. "Would you look at this; a rectal thermometer!"

"Ummm, yeah. My maid has been taking my temperature lately and giving me a nightly enema before bed." Mokuba explained, doing his best to sound convincing despite how painfully obvious it was that he was lying.

"Oh, really?" The blonde dressed only in black lingerie and stockings turned her attention to the raven haired boy standing in front of her. For a moment she worried that he might be telling the truth, after all, it wouldn't be a surprise to her if he was willing to pay one of the maids a bit extra to indulge in his weird little fetish. 'I better show this little brat that I'm worth every penny he's paying me.'

"If that's the truth then I better check your temperature." Mai smiled a devilish grin down at the boy as she held the glass rod in her hand, ready to play along with his perverted game. "And, no matter what your temperature is, you're going to be given an enema."

"I- umm- okay." Mokuba stumbled over his words, truly surprised that Mai was not only about to take his temperature, but give him an enema on top of it!

"Lay down and I'll see just how icky the baby's tummy is." Mai cooed in a condescending tone as she patted the bed, beckoning Mokuba forward.

The young Vice President of the Kaiba Corporation stepped forward on shaking legs, his blistered bottom burning with every step he took. He noticed that Mai was watching his every move, her eyes glimmering with a devious flicker as her once scowling face vanished, replaced with a playful smirk that made Mokuba tingle all over. Slowly, he climbed into bed and lowered himself down until his rock hard erection poked into the bedding. The boy moaned slightly as he felt his sensitive member sliding upwards against the comforter, sending shockwaves throughout his body as it rubbed against the material. Even with the scorching heat radiating from his bottom he felt so alive in such a vulnerable position while he waited with a baited breath for Mai to make her move.

Looking to his side, Mokuba could see Mai's lingerie-clad body moving over to the nightstand where the little jar of vaseline resided. The sound of Mai's nylon clad thighs rubbing together, the material scratching against each other mere inches away from his ears caused Mokuba's cock to twitch. His eyes never left Mai; he watched as she took the top off of the vaseline and dipped the large rectal into the thivk jelly, playfully spinning it around before pulling the now greasy rod from the tub.

"I think that should be enough." Mai commented to herself before taking on a much more sultry tone as she switched the thermometer to her left hand. "But I better make sure."

Mokuba watched in awe as the blonde slid the fingers of her right hand over the glass tube teasingly, spreading the thick lube over the slick surface before gripping it like a cock in her hand before pumping it up and down, to make sure that the entire instrument was completely covered in vaseline. He watched in stunned silence as she kept pumping the thermometer with a tight grip, imagining that it was his penis in the blonde's hand.

"That should do." Mai remarked, inspecting the glistening rod one last time before returning her attention to the naked boy laying on the bed. "I'm going to take your temperature now, baby. So be a good boy and don't make a mess."

Mokuba winced as he felt Mai's hands pry open his bottom; her fingers were practically icicles digging into his stinging skin. The initial contact was jarring, but the cool sensation actually felt good once he had gotten used to it.

'I wish she'd spread some lotion on my butt.' Mokuba thought longingly.

There was no denying what was about to happen next. Mokuba braced himself for it, ready to inhale the moment the stiff glass tip of the thermometer touched his puckered hole. However, much to his surprise, his whole body lurched forward the moment Mai's lone finger touched his asshole.

"Relax, Mokuba." Mai ordered, her voice barely masking the slight annoyance she had upon seeing the boy's reaction to the glob of vaseline she had just smeared over his anus. "I'm just trying to make things easier for you."

There was now no doubt in her mind that Mokuba had been lying to her about the maid giving him "temperature checks" before bed. 'If he was used to getting his temperature taken he wouldn't have jumped like that!' Mai rightly assumed. Her initial anger was short lived upon realizing that she could have some fun with the lying little brat laid out in front of her. 'Let's see how much I can make him squirm!'

"I'm sorry Miss Mai!" Mokuba replied, a crimson hue spreading across his tan face as he felt her spreading something icy over his defenseless hole.

His sheepish reaction and the redness in his face as he looked over his shoulder made Mai's heart melt. 'No wonder Kaiba lets this kid do whatever he wants.'

While her right hand kept the boy's small cheeks pried apart, Mai used her left hand to slowly push the thermometer into Mokuba's bottom, watching the glistening glass gradually disappear as the rod went deeper into his ass. It was no surprise to feel the boy's body naturally trying to push the foreign intruder out, but Mai applied a bit more force and kept pushing. Roughly a second later she heard Mokuba inhaling deeply, his anal passage accepting the tube without any resistance.

After inserting the thermometer Mai removed her hand from Mokuba's bottom, leaving the thermometer sticking out of his pert posterior like a little flag pole. She remained directly behind him, observing her handiwork with a smile as Mokuba laid there quietly.

"It doesn't hurt, does it?" Mai asked, making sure the boy wasn't in pain before she started to play with him.

"No, it feels really good." The way Mokuba had answered the question made Mai suppress a growing need to laugh.

"Yeah?" Mai replied with a smirk.

"Yeah!" Mokuba answered happily.

"That's good, but I'm not getting an accurate temperature." Mai remarked, lying through her teeth, as she stared at the instrument.

Before Mokuba could respond Mai had reached over and wrapped her fingers around the end of the thermometer. With no warning, she started twisting the rod, spinning it around in the boy's lubed up asshole. As expected, Mokuba released a moan and Mai noticed that he was squeezing the bedding in between his fists while lifting his head off of the bed. "Hold still, baby. I need to adjust it."

"Okay." Mokuba's strained voice called out to her.

A devilish grin spread across her face as she decided to start pulling on the thermometer. The first teasing tug caused Mokuba to yelp, much to Mai's amusement. She kept doing it, playfully tugging on it only to push it slightly back into him before tugging once more. This caused the boy laying at her mercy to gasp, his knees pushing into the bedding, thrusting his bottom into her hand as she kept playing with him. It didn't take long for her innocent teasing to become something more intense. This was all done slowly to warm Mokuba up for what Mai was planning to do next. Suddenly, she picked up the pace, simulating the most basic action of intercourse as the accomplished duelist rapidly plunged the tube in and out of his tight passage, fucking Mokuba's ass with the rectal thermometer!

"Oh- Oh- Oh-!" Mokuba kept repeating the single syllable as the blonde had her way with him. If he could focus his thoughts long enough to think, he'd realize that this was the closest he had ever been to getting "pegged" which was something he had learned about on the internet.

Mai could read the boy's body language; every little twitch and quiver, his yelps and moans, told her that Mokuba was about to make a very sticky mess on his bed. She pulled on the bulbed tip of the glass tube one last time, yanking it out with ease, before wiping it off with a baby wipe. It was not out of concern for some poor servant, who would ultimately end up having to clean the soiled sheets coated in Mokuba's love stain, that made her pull the thermometer from the boy's tight hole. No, the blonde bombshell knew from her many romantic encounters that it was always necessary to leave a man wanting more. Not only in love, but in business it was the best strategy; she was going to leave this little brat begging for her to return once she left and ask for double!

"It looks like you lied to me, little baby." Mai said in an annoyed tone as she pretended to read the thermometer. "Naughty boys who lie to their nanny get an enema and no diaper changes until morning."

Mokuba was so overwhelmed by the incredible rush of pleasure he had just felt and could barely register what Mai was saying over his labored breathing. 'An enema' and the word 'diaper' were the few words he had heard as he laid face first into the mattress, trying to catch his breath.

Mai left Mokuba to recover as she picked up the red rubber bag that was lying on the boy's nightstand and carried it into the bathroom. She had initially regarded it as nothing more than a curiosity when she had originally looked over all of the items on Mokuba's nightstand, but upon looking over it a second time the blonde recalled that it was an enema bag. She knew very little about how this weird rubber bag worked and decided to do a quick search with her cellphone after she closed the bathroom door. It was important that she knew what she was doing and, after a moment of looking through her search results, she came across a simple enough guide on administering enemas. The post explained that the bag needed to be filled with water to work properly so the blonde hooked it up to the faucet in the sink for it to gradually fill up with warm water before she turned her attention back to her phone. As the bag gradually filled itself she continued her research and learned that she could also mix soap inside the bag for a more intense cleaning.

An unexpected burbling sound interrupted her reading and caused her to look up from her phone only to see that the bag was overflowing with water.

"Oh, shit!" The blonde started to panic and immediately shut the faucet off.

Mai breathed a sigh of relief and resumed reading the guide on her phone. There were a few more steps, but nothing as important as the passage that instructed her to connect the hose and clear the line of unwanted air. She attached the hose and flipped the valve, causing an unmistakable odor of wet rubber from the inside of the bag to fill the bathroom.

'That should do it.' Mai thought, satisfied with everything as exited the bathroom with the enema bag and hose in her hands.

Ultimately, she decided against mixing soap in the bag since she didn't exactly know what she was doing, but the young woman had a sneaking feeling that Mokuba would be pooping his diaper regardless of whether or not she had put soap into the water.

"It's time for your enema, Mokuba." Mai announced in the most tantalizing voice she could produce as she approached the boy still splayed out with his stomach on the disposable diaper.

"Thank you, Miss Mai." The boy said in a voice slightly above a whisper.

It was obvious to the blonde bombshell that Mokuba had been waiting for this moment. 'I'll make this an experience he'll never forget.'

"I'm going to need you to roll over onto your back and bring your knees up to your chest." Mai instructed, watching the boy do as he was told until he was laying with his back on the top of the designer diaper.

"Is this good, Miss Mai?" Mokuba asked while he kept his arms wrapped around his knees.

"Perfect." Mai replied, her hand guiding the rectal tip at the bottom of the white hose towards Mokuba's still lubed up hole.

As she had done with the thermometer, Mai spread a dollop of vaseline onto the tip of the white nozzle and, with a twisting motion, she slowly started pushing the tube into his posterior. Her eyes were immediately drawn to the sight of Mokuba's anus twitching slightly upon feeling the cold tip of the nozzle penetrating his hole. However, unlike his natural resistance to the thermometer, he relaxed once the tip of the nozzle breached the rim of his ass, welcoming the nozzle. Mokuba's muscles swallowed the flared tip and, much more, with very little pushing on her part. She could hear Mokuba's breathing quicken ever so slightly as the boy held the nozzle in place.

"Good job, Mokuba." Mai smiled, praising the boy for not giving her too much of a hard time. "I'm going to flip the switch now."

Mai unclipped the hose, turning the valve completely which sent a torrent of water rushing down the hose and ultimately into the boy laying with his butt up in the air.

Mokuba's eyes bulged open as the warm water surged past the ring of his anus and poured into his colon. He could feel the water washing over his insides, flowing deeper into his body, constantly searching for somewhere to spread. Subconsciously, he pulled his knees closer to his chest, arching his back in the hope that such a position would take the rapidly building pressure off of his stomach and allow more water to enter him at a quicker rate. The long sought after feeling of truly being filled was being achieved with each passing second as the water coursed through his intestines. It was a very odd sensation; an unusual feeling, but one that Mokuba was loving as memories of past enemas being given to him came to his mind, triggered by the gut cleansing water filling him.

'This feels amazing!' Mokuba's elation was short-lived as the initial pressure became a series of cramps that started to rock his stomach and intestines. He could feel his muscles beginning to tense up and the undeniable feeling of having to poop was becoming impossible to ignore. He knew that this was the final outcome but it was never supposed to happen this fast!

"Miss Mai!" Mokuba called out to his pretend babysitter. "Can you slow down the water? It's too much to handle!"

"I- ugh- sure!" Mokuba's unexpected pleading caught the lingerie-clad duelist off guard. The blonde turned the valve slowly in her hand until it was roughly a quarter of a turn away from stopping the flow of water.

A relieved sigh came from Mokuba as he relaxed, laying upper back completely against the bed while he kept his knees cradled against his chest. His breathing became steady, his body grew more accustomed to the water that was pooling up in his belly, but after a few moments of placid tranquility, Mokuba realized that the water was flowing into him too slowly.

"Can you maybe open the valve more?" It was a timid request from a shy, blushing boy that Mai was confused by.

"I thought it was too much for you to handle?" Mai couldn't help but ask, her earlier concern vanishing as a smirk spread across her face upon realizing what she had just said.

"It was!" Mokuba blurted out which only made the slight blush become darker against his brown skin. "Maybe you could try turning it halfway?"

"Ask me properly, little boy." Mai demanded, her voice firm, but not completely serious; she was starting to have fun again.

"Miss Mai, please give me a proper enema to clean me out before bed!" Mokuba begged.

Whenever Mai thought she had seen a new level of submissiveness coming from Mokuba, the younger Kaiba always managed to surprise her. It was quite the contrast from the defiant and strong willed kid she had seen on Duelist Kingdom all those years ago. "That's a good boy."

With a smile, Mai turned the valve, setting it to halfway to the point it had originally been when she first started the enema. It seemed to allow just enough water to not overwhelm the boy but make him squirm which satisfied Mai's inner sadist. Despite originally not wanting to do anything more than spank Mokuba, Mai was truly beginning to take pleasure in administering the enema to the rich brat at her mercy.

"Tha- tank yew!" Mokuba lisped in ecstasy upon feeling the fresh blast of water pushing the already stagnant fluid inside of him, further into his colon and ultimately to his stomach.

His once toned tummy was expanding, filling up fast due to the increased stream of water cascading through his bowels. It only took a minute or two before the familiar ache of his swollen colon became impossible to ignore. The boy did his best to gauge how full he was, trying to remember if he had ever experienced anything like this before. Mokuba never knew how many quarts his caretaker at the orphanage had used on him, but given the fact that the bag Mai was currently using could hold three quarts, he assumed that there must've been about two quarts in him at the moment. He knew that he was taller than he was back than so it made sense that he couldn't handle the same volume of water which was currently filling his bloated belly.

"Too much." Mokuba moaned, exhaling all the air his lungs held.

A slight squirt exploded past the nozzle in his ass after he relaxed. His eyes went wide as he clenched his tired hole shut, sealing the muscles of his anus around the nozzle, holding it firmly in place. Still, the damage had been done; he felt the water trickling down the back of his cheeks, coating them in a thick, slimy liquid that no doubt covered the spread out diaper that lay just beneath him.

"Mokuba?!" Mai squealed, completely caught off guard, but with enough presence of mind to pull the diaper up to contain the slight anal geyser from soaking bedding.

"Sorry." Mokuba apologized, looking anywhere but at his blonde babysitter who was giving him exactly what he craved.

"I guess it's true what they say about baby boys; they squirt." The blonde joked, teasing the boy while simultaneously trying to ignore the fact that Mokuba almost shat the bed.

"Yeah." The blushing boy, whose face burned almost as much as his bottom, couldn't do anything other than agree with what Mai had said while he struggled to keep his focus solely on his ass. Even with his entire mind focused on clenching his bottom together he still found his thoughts drifting to how his swollen stomach, filled with water, felt pressing against his slender thighs. His midsection and bottom were aching for relief as he started panting, sweat forming on his forehead and bottom as his body quivered from the pressure.

"Should I pull it out and diaper you?" Mai wondered aloud. She loved watching Mokuba whimper and squirm, but the gradual sheen of sweat spreading across the boy's forehead was making her wonder if he was about to blow. The blonde could deal with delivering firm spanks, sticking stuff up his ass and everything in between but there was no way in hell she would ever tolerate shit or change a dirty diaper no matter how much Mokuba offered to pay her!

"H- how long has it been?" Mokuba barked in a desperate voice, his eyes closed and his mind concentrated completely on keeping his asshole clenched shut.

"Umm, it looks like it's been about ten minutes." Mai answered, looking up from her cell phone before setting it back down on the nightstand. Out of the corner of her eye, Mai spotted an oddly shaped plug that sat next to the thoroughly used rectal thermometer. Upon closer inspection it looked small enough to fit up Mokuba's ass.

'This gives me an idea.' A sinister smile spread across the blonde's face as she quickly scooped up the butt plug and dipped the bulbous tip into the vaseline before hiding it behind her back.

"I think ten minutes is enough." Mokuba finally answered before adding, "I'm gonna need you to help me get to the toilet."

"The toilet?" Mai feigned shock upon hearing that word coming out of the diaper boy's mouth. "Babies like you don't use the toilet, do they?"

"What?" Mokuba squeaked, not entirely sure if he had heard Mai correctly.

"Hold still, baby." Mai ordered, ignoring the boy as she swiftly pulled the nozzle out from his ass.

Without warning, she brought the lubed up butt plug out from behind her back and pressed the greased up tip of the rubber head against Mokuba's unsuspecting rosebud. An annoyed whine escaped from the boy, but that didn't stop Mai from working the greasy tip of the plug past the ring of Mokuba's ass until it gradually slid into place.

"What did you just stick in me?!" Mokuba demanded in a whiny tone, fearful of the answer he would receive as he laid on an unfurled diaper with a full enema trapped within his pulsating belly,

Mai delivered a hard smack on Mokuba's already punished posterior. "That's for raising your voice and not addressing me properly!"

"I'm sorry, Miss Mai!" Mokuba cried out, quick to apologize.

"That's better, young man." Mai smirked even as her voice remained firm. "I didn't want you making a mess while I taped you into your bedtime diaper so you're going to be a good boy and hold that in there for me, understood?"

Mokuba nodded his head, knowing full well from the stiff obstruction lodged in his ass that the blonde duelist had shoved the black butt plug up his butt. He hadn't expected her to use it, but now that it was firmly in place, he was beginning to appreciate her resourcefulness.

Even with his resolve, Mokuba hadn't been sure if he could've made it to the toilet; now he didn't have a say in the matter. The way Mai had taken charge, dooming him to yet another dirty diaper, wasn't exactly what he had planned for today, but he couldn't deny how pleased he was with her decision! It not only perfectly recreated many of his innermost fantasies, but made him feel just as small and helpless as he felt last week.

"Say it!" Mai barked, her hands on her garter belt adorned hips.

"Yes, Miss Mai." Mokuba answered, cowering under her stern voice as he held his aching stomach with both of his hands.

"That's better." Mai smiled as she leaned forward and patted the interior of the spread out diaper. "Bring your feet down!"

Mokuba knew better than to disobey and slowly released his legs, lowering them until his feet rested on top of the comforter. He tried to keep his breathing steady despite the near constant pain bubbling up in his stomach. The gurgling was primarily from the enema, but a small part of the boy was nervous that he would somehow push the plug out and poop himself during his diapering.

While Mokuba laid there, worrying about the plug, he didn't exactly pay any attention to Mai until the blonde's bountiful breasts, contained only by a thin layer of her sexy black lingerie, came into his line of sight. Once again, he was mesmerized by her beauty and barely noticed that she was raising his legs off of the bed until the pressure in his abdomen shifted, causing his gut to gurgle ominously. Mokuba winced from the pain in his stomach only to be immediately rewarded with the cooling sensation of ointment being spread across his burning bottom. He sighed, grateful that the heat coming from his punished bottom was finally being quelled by the soothing cream that Mai's hand lovingly applied to his swollen cheeks.

The feeling of Mai's angelic hands working the cream into his bottom was almost as good as being spanked and, much to the boy's surprise, sent shockwaves through his penis, causing it to swell with excitement. He had completely forgotten about his erection during the enema when the onslaught of cramps started bombarding his belly and now he was staring at his erection peeking out from just behind his trembling tummy.

A familiar feeling of apprehension filled his heart when he felt Mai's hands move from his bottom only to spread apart his legs; he didn't want his penis to erupt on her if he got too excited again!

"Looks like someone's a naughty little baby." Mai observed with a snicker.

Mokuba remained quiet, his face saying more than words ever could. 'I can't risk having another accident like last week!'

"You better not spray me with that thing or I'll leave the plug in." Mai threatened, her hand hovering just over the end of the rubber butt plug sticking out of Mokuba's hole. "Do we have a deal?"

"Yes, Miss Mai!" Mokuba absentmindedly agreed, not even realizing what Mai was saying until he felt her remove the stiff intruder.

Working quickly, Mai dropped the butt plug on the bedding and grabbed both sides of the oversize designer diaper. She pulled the thick white and purple disposable up between Mokuba's legs and rapidly started ripping the tapes loose from their affixed positions. Luckily for her, this diaper only had two tapes: one on each wing of the oversized Pamper. Despite how fast the blonde was going, Mokuba could feel each tape being pressed into his hips, fastened onto the front of his diaper, trapping him inside the thick pair of custom made Pampers.

Mokuba hadn't worn a diaper since Mai had last diapered him; he tried to put one of his designer diapers on the night after pooping his Pamper, but it just didn't feel the same. The tapes weren't fastened properly and it bunched up in between his legs thus didn't count, especially since he had ripped it off in frustration after only a few minutes of wearing it after trying to fix the tapes. There was something inherently different about being diapered by another person that couldn't be replicated.

Even with his guts gurgling, Mokuba was able to appreciate how the diaper hugged his hips just right. The industrialized cotton polymers cradled his freshly lotioned bottom, ready to contain anything that the boy could push into it. His erect penis felt like a small carrot wrapped in a pillow, dwarfed by the incredible bulk of the diaper and yet this gave him an immense sense of security; no matter what happened, he would be well protected thanks to the padding covering his bottom and cock.

"I- ugh-" Mokuba paused, unable to speak just as an intense fart erupted from his bottom.

Mai cocked an eye, knowing full well that the boy was either about to start pooping himself or had already begun to do so and yet she was unable to take her eyes off of him. Her curiosity ultimately outweighed the disgust she naturally had and she found herself watching Mokuba squirming, his face strained as he grunted. He was originally holding his stomach when the first batch of muffled farts had rocketed out of him, but now his fists were balled up, clenched tightly as he bent his knees and pushed. It was painfully obvious to the blonde that Mokuba was doing everything he could to rid his body of the fetid water that had been trapped inside of his belly.

Mai was so absorbed in the spectacle playing out in front of her that she almost missed the soft knocking that came from Mokuba's door. It seemed like everything froze as she looked over her shoulder, wondering who could be at the door. 'Did they hear Mokuba grunting? Shit! Can they hear him through the door?!'

"Mokuba!" Mai hissed. "Try to be quiet; someone's at your door!"

If the boy had heard what she had said, he made no attempt to acknowledge her, but his groans and grunts instantly cessed.

'Ok, that's one problem out of the way.' Mai thought to herself as she stared at the door. The last thing she wanted was to raise suspicion by ignoring whoever was knocking so the blonde moved quickly to the door, opening it just enough for her head to be seen.

"Mistress Mai," the familiar voice of the maid from earlier, spoke to Mai, her eyes meeting the other woman's eyes, "I've brought your clothing to you; freshly laundered and ready to wear."

Mai looked over the slightly older woman briefly, noting that she wore a traditional maid's outfit. Originally, she would've assumed that the uniform was Kaiba's idea, but after everything Mokuba had put her through, she was starting to have doubts.

"Thanks, I really appreciate it!" Mai smiled warmly, accepting the hanger holding her blouse, skirt and jacket.

The maid bowed slightly before turning away from the door, leaving Mai's sight, as she walked down the hall.

'Thank God!' Mai closed the door, exhaling as she leaned her back against it with her clothing clutched against her bra-covered breasts, grateful that the maid hadn't wanted to come into the room.

"Ugh!" Mokuba groaned, his face was burning once again, but it was nothing compared to the mess rapidly filling his diaper.

Mai looked over at Mokuba as another muffled fart filled the room. She knew the boy wasn't going anywhere so she walked over to Mokuba's private bathroom and let herself in, closing the door behind her. In any other situation she might've felt bad for the kid, but he had literally done this to himself. If he hadn't squirted her clothes with lotion she might've taken him to the toilet. Maybe. Laying there in a dirty diaper, was the only punishment that Mai knew worked and yet was it really a punishment? This was the second time he had talked her into sticking something up his butt that ultimately made him shit himself.

For the next few minutes Mai contemplated if Mokuba actually enjoyed pooping his Pampers as she changed out of the sexy lingerie Mokuba had gotten tailored for her to wear and into her regular clothes. She considered keeping the naughty nightwear before thinking better of it. 'The brat will probably pay me to wear that again.' Mai thought as she finished smoothing out her skirt.

Mokuba writhed on the comforter, still quivering from the pure exertion it took to rid his bowels of everything that had been trapped inside of stomach. The entire enema, or at least a good portion of it, was now pooling around his sore bottom, his backside caked in a liquefied mess that threatened to leak out from his bloated diaper if he so much as sneezed. It was actually worse than what had happened last week and Mokuba loved it! He loved how small and helpless he felt. How pathetic he was to be laying in his bed in an almost blown out Pamper! He was consumed by the sheer joy and pleasure that being in a dirty diaper gave him that he failed to notice that Mai was standing over him.

"Looks like you got yourself into another mess, baby." Mai snicked down at him, practically towering over him in her white boots. She slid her hand down between the boy's spread legs and grabbed his padded crotch. "But you know that I don't do dirty diapers so you'll have to figure this out on your own."

"Please change me!" Mokuba whined, his eyes as wide as saucers.

"Nope, that's not gonna happen." Mai replied, patting Mokuba's diaper teasingly.

"Ugh!" Mokuba's eyes rolled back into his head as he leaned back, unleashing a sticky blast into the front of his designer diaper. His body convulsed momentarily, spasming as the boy pushed his hips into the blonde's hand.

Even with the incredible padding shielding the boy's cock Mai could clearly feel the heat coming from the front of the diaper as the boy's unexpected ejaculation gave way to a forceful stream of piss pelting against the inner lining of the diaper. After what seemed an eternity, the torrent stopped and Mai removed her hand from the boy's crotch. "You really are a handful, you know that?"

Mokuba remained quiet, motionless on the bed as his eyes traveled up the blonde's body, starting at her naked thighs which disappeared under her mid thigh length, lavender colored pencil skirt. Her white top, fashioned like a corset, peeked out from underneath her trademark lavender jacket. It wasn't as stunning as the black lingerie she had been wearing only moments ago, but she was still beautiful.

"I'm sorry, Miss Mai." Mokuba offered, weakly.

"It's okay, kid." Mai smiled, leaning down to kiss Mokuba on the forehead. "You're just a baby."

Mokuba's face burned like crazy, he could feel all the blood literally flowing to his cheeks.

"Let me know the next time you need a babysitter." Mai winked at him, grinning as she turned around and made her way to the door.

The End