Milly (4 Parts)

Note: This is a story-prompt for Phat94.

Prompt Directory

1.

Milly was a college sophomore. Her major was biology. And despite the oddness of some of her experiments, she couldn't deny that something strange was happening to her.

Milly's bottom had been filling out. Though she had been dismissive of it initially--even appreciative of it--her backside was getting quite round. Sensitive, too. She could hardly keep herself from massaging the mounds, her loins throbbing as she came repeatedly from the mere sensation.

It had all started at a faculty party a few weeks ago. Milly didn't know what had occurred there. It might have been something in the punch. Jeff had brought her a glass.

"Hey Milly," said Jeff at present as he entered the lab and sat beside her. "Look what I brought." He set down a large platter piled with soft chocolate chip cookies.

"Oh wow," said Milly.

Her appetite had surged in recent weeks. Though she was a chubby girl, with thick thighs, full D-cups, plump hips, and a slight belly, Milly had never found shame in tight clothes and that showed off her voluptuous physique. At present she was wearing a tank top and micro shorts, her thighs squishing together and her plump bottom bulging out of the minimal coverage.

She fidgeted her knee-high boots. "I really shouldn't..." said Milly uncertainly. She had noticed that her excessive eating seemed to directly correspond with the increasing growth of her bottom. It was big and wide. She was beginning to look as though she had gotten work done.

"Oh c'mon Milly, just one bite."

And Milly couldn't help herself. She dug into the cookies and quickly demolished them.

She remained peacefully unaware that every calorie she ingested fueled her ongoing transformation.

In only a matters of days, her bottom was bobbing as she walked about campus. People would certainly stare. Her ass would put Nicki Minaj's to shame. Very few panties could accommodate her anymore, so Milly became a full-time user of thongs. Her clothes grew tighter and tighter every day, her bottom protruding out from the bottoms of her miniskirts or bulging over the tops of her spandex leggings. Her ass was just out of control.

And it was getting so sensitive. Milly could hardly get through the school day with her bottom bouncing around behind her. She had to sit down with absolutely care against the platform of tingling fat. Her plump cheeks had been feeling strangely bloated and full in the past couple of days. The sensation of her sensitized skin rubbing around in her pants left Milly staggering to the bathroom many a day.

It had been one of those occasions. 

Milly had been on the dance floor of a club gently rocking, her ass bobbing behind her, obscenely large in the miniskirt that offered it barely any coverage at all. She had been enjoying her gentle sway when she felt someone come up behind her, grinding on her.

Just the sensation of the strangers heated groin set Milly off. She caught the glimpse of a goth chick as she pulled away. Milly then hurried into the rest room. She leaned on the sink and tried to catch her breath. Her forehead was beaded with sweat and her ass cheeks felt unbearably tight.

Milly looked up as the door opened behind her and the goth girl appeared. She looked gorgeous with her dramatic eyeliner and her black lipstick.

"H-hi," said Milly.

But the other girl didn't put up any airs. She simply grabbed Milly's shoulders and pushed her into one of the tiny bathroom stalls, where she dove her hands into Milly's ultra-tight skirt, and Milly lost complete control.

Milly wrapped her arms around the stranger, and soon they were sucking, kissing, massaging. Milly's ass was throbbing.

The stranger continued to rub and kneed Milly's ass, Milly's face growing redder and redder until she couldn't hold on any longer.

"Ohhhhhhh..." Milly groaned as her backside tightened yet more, and two hard nubs sprouted to the surface. The mounds were unbearably tight.

Milly didn't know exactly what happened next, just that there was warmth, wetness, a splashing noise, and a strange relief of pressure. She craned her neck to look at her momentous bottom to see what appeared to be fat, erect...nipples…protruding from the mounds. And they were presently spraying milk against the stall. Milly was in a state of shock. "Nggghhh..." she grunted as her ass bloated more, pushing out and rendering the skirt useless.

The stranger seemed contently oblivious, too immersed in pleasure to register what was going on. The goth girl continued to massage, creamy milk splashing into her hands.

"Mmmmm...ahhhhh..." Milly moaned. Her mounds were hyper-sensitive. Hey eyes rolled upwards as a second orgasm wracked her body.

Her bottom wobbled and pushed out inches, the stranger finally seeming to register what was going on. The goth girl backed away in shock then hurried out of the stall.

"Wait-" In her panic, Milly attempted to follow, only to find that her ass had left her wedged in place.

Milly struggled to move, but it was no use. She fumbled, lost her balance, and folded forward, her bottom jammed in place, sticking out in the air, and keeping her from smacking into the floor. Her ass had turned into a pair of breasts. Fat ones. And the more they were pressured the more Milly was aroused. The more Milly was aroused, the more they grew. Milly fruitlessly swung her arms before her butt-breasts tightened, their tense nipples seeped, and she was again lost to pleasure.

2.

A few mornings later, Milly slipped into yoga class.

She was trying her best to adapt to her new...physique. She had spent several days locked up at home before finally convincing herself that it was time to resume a normal life.

Her massive ass bobbed behind her. It looked as though she had two honeydews stuffed in her pants.

It had taken Milly quite a while to even get the pants on. Cramming her massive mounds into her pair of spandex yoga leggings had been no easy feat. The fact that the mounds had nipples—and that her ass-cheeks had ultimately transformed into a fat pair of breasts--still unnerved Milly. She tried not to think about it. Thankfully they hadn't seeped since that disastrous evening at the night club, though lately, they had started to feel quite full and warm.

Milly's round mounds jiggled with every move she made. Fortunately only a few inches of her ass was protruding over the waistband of her pants. And her butt-nipples couldn't have been sticking out that visibly--Milly hoped. Well, they didn't feel erect.

But with every move Milly made to inch over to her spot, her rocking butt-breasts seemed to rub against someone else. The mounds were large, round, and extremely intrusive. They prompted gasps, stares, and shocked mutterings.

Milly did her best to ignore it, cringing as she felt her butt-nipples starting to distend. She breathed a sigh of relief when she finally made it to her spot. She leaned down to lower her yoga mat.

There was a resounding SMACK, Milly yelping as her bottom quaked. Clutching her jiggling mounds, she quickly turned around to face her assailant.

The woman behind Milly simply winked at her as she wiggled her offending fingers. A few mats down, a young man craned his neck to watch as Milly's ass continued to jiggle. "Damn girl."

Milly's face reddened as she felt her butt-nipples becoming harder, swelling, pushing out at the thin material of her yoga pants. She breathed deeply trying her best to cool down, but she could feel the mounds tingling and tightening, the waistband pushing farther down. Finally, Milly felt moisture.

"Gotta go," said Milly weakly, making her way sideways down the rows of mats, not caring who her bobbing ass smacked into now.

Twenty minutes later Milly was back in her apartment, on all fours on her bed with the yoga pants she had abruptly outgrown pushed down around her knees. She had attached the suction cups of a breast pump to each of her ass cheeks, Milly having preemptively ordered it online a few days before. After a moment's hesitation, Milly flicked the switch.

"Nnngghhh..." she groaned, her face reddening and her butt-breasts seeming to pulsate as they were pumped for all they were worth.

Her loins tingled as her butt-nipples grew painfully tense.

Milly lowered her face to her mattress, sticking her ass out even more. To her distress, her ass didn't seem to be getting any smaller. If anything, it was getting tighter and larger, swelling out even as it was milked.

"Ohhhhhh...mmmmmphh..." Her face in her pillow, Milly could do little more than groan.

3.

“Yes, seven,” said Milly impatiently. “Meatlovers. Extra-cheese. And extra—everything,” she finished, feeling her stomach start to grumble as she leaned her elbows on the kitchen counter.

Milly was salivating when she heard the restaurant worker read the order back to her. She nodded impatiently.

“An hour?” said Milly in bafflement. “Oh god…fine, okay. Please hurry.” Her stomach grumbled again as she hung up the phone.

Milly didn’t know why she was so hungry, though she suspected it had something to do with the recent growths on her posterior.

Deciding that she could do with an appetizer, Milly turned toward her refrigerator, her bottom wobbling uncontrollably, trembling and swinging, up and down, side to side, as she waddled her way to the fridge. She had to pause to breathe on a few occasions, her face flushed as her butt-nipples rubbed against the inside of her too-small leggings, making her incredibly aroused.

Once the fridge was open, Milly plopped down before it and began to compulsively shovel food into her mouth. She ate anything and everything that her fingers could reach. It didn’t matter how bizarre, or inappropriate it was to eat it on its own. There was cold chicken, mayonnaise packets, uncooked hotdogs, half a loaf of sliced bread. She could feel her butt-breasts swelling, pushing out more over the hem of her leggings. She could feel the nipples upon them tingle and seep until the back of her pants were soaked and she was sitting in a puddle of milk.

Just as Milly lifted a tub of butter, she heard a knock on the door. Had it been an hour already? Gasping for breath, she struggled for several moments to heave her milk-bloated bottom off of the tile floor. It felt full and warm, and uncomfortably tight, the large nipples now gushing, and dripping milk behind her. About half of her bottom was protruding over her pants, the waistband barely able to conceal her butt-nipples by then, and feeling like it might snap.

Taking a deep breath, Milly waddled out of the kitchen and towards the front door, her bottom continuing to bob behind her. It was tight and round, getting heavier by the moment. She knew that it was on the cusp of fully popping out of her pants. A few times, she nearly lost her balance and fell backwards. It was massive. Her ass cheeks resembled two basketballs stuffed together behind her.

Milly was sweaty by the time she reached the front door. She swung it open. “Finally,” she breathed, to the stack of pizza boxes facing her. Milly’s eyes drifted down to the pair of strong arms holding said boxes. Her loins tingled, and her butt-nipples were practically spraying by then. “Right here,” Milly nodded to a table by the door.

The delivery man stepped just into the threshold and lowered the boxes. Finally, Milly was able to see the handsome face on the other side of them.

“That will be a hundred f-fo-four…” the delivery man trailed off, unable to help staring at the way Milly’s bubble-bottom bulged out somewhat beyond either side of her hips.

“Why don’t you come in,” said Milly.

“I, uh, I shouldn’t.” The delivery guy gave a sheepish smile, but Milly was already grabbing his collar and yanking him into the apartment.

He was hard by the time Milly closed the space between them, his hips pressed against hers. She took his hands and brought them around her, to rest on her plump, round ass. The delivery guy stared at her in wonderment.

“Go ahead,” Milly groaned out, as the delivery man tentatively palmed the mounds, her butt swelling out even more, as if coaxed by his touch. “Squeeze.”

4.

The pizza boy pumped in and out of her from behind, practically bouncing against her bloated butt-mounds. He continued to grope and squeeze her butt-breasts, the large nipples spurting milk in turn with his thrusts. Milk splattered to the ground between them, Milly’s whole body tingling. Her continually swelling mound seemed to push the pizza boy away from her, but he simply pressed harder into her, squeezing against the mounds more. “Ohhhh…” she grunted, her face flushed. Pizza boy was quite well-endowed, and had no trouble reaching her magic spot. Milly gripped hard onto the living room table as she rocked against pizza-boy’s cock.

Somehow between the sex, the squeezing, the throbbing, and the uncomfortable yet arousing sensation of her butt-breasts continuing to swell with milk, Milly managed to shovel pizza slices into her mouth. She had already worked her way through three boxes. Milly chomped slices down, one after the next, sometimes wrestling with the gooey mozzarella. Her butt-breasts surged with growth as she did. She faltered when the pizza boy gave a particularly powerful thrust. She could tell he was close.

The pizza boy tensed. “I’m gonna—“

“Oohhhhhhhhh…” Milly groaned, her latest pizza slice falling out of her hand and hitting the floor with a squelching splat. Milk sprayed from her ass-nipples in all directions. She slumped forward, but the pizza boy held her around the waist, keeping her up. Both stood there, sweat-soaked, panting.

Pizza-boy turned Milly to face him. He ran his arms up and down her heated body. Milly’s ass felt much heavier than it had before. It continued to bob up and down even after she had stopped moving. She could feel that it was sticking out much farther, wobbling, swollen to proportions that would be sure to sabotage her ability to wear pants. By then, her best hopes might have be to wrap a bedsheet around her hips.

But pizza-boy wasn’t done with her yet. He leaned over to her ear. And to her shock, he was hard again. “Shall we take this to the bedroom?” he said huskily.

-

Milly groaned awake. Her phone alarm was humming annoyingly, and from what she could see from beneath her sheets, it was sunny out.

Milly sat up and looked around her. Her room was a disaster. The whole bed was cool and moist. In fact, the carpet was soaked. Milly looked around. The pizza boy was nowhere in sight.

Rubbing her throbbing head, Milly began to climb out of bed, but she found that her ass was firmly planted against the mattress. She again attempted to heave herself up, but she seemed stuck in place. She slowly turned her head and looked down at her mound.

She was massive. What had resembled basketballs prior to her pizza-delivery were near the size of beach balls now. Milly struggled some more, beginning to panic. In response, her large, distended butt-nipples began to spray milk, her mounds tightening as they did. Her mounds quavered as she fumbled and wiggled, her legs flailing, and at times losing contact with the mattress. She breathed thinly in a growing panic as her butt-breasts continued to wobble, jiggle, and seep, yet showing no signs of relinquishing their mission to immobilize her.