"Cheat Day" (Commission, WG, SLOB)

This story is a commissioned piece, commissioned by one of my patreon patrons. It contains some very heavy slob elements which you may not be into, or you may be VERY into it depending on your preferences. Feel free to skip this one.

If you don't want to skip this one and wish to continue reading further...

Enjoy!

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Jill was a fanatic when it came to exercise. She was an up at 5am for a run, two visits to the gym a day kind of girl. She loved the thrill of pushing her body to its limits, and she loved how far those limits were. She found running to be easy, jumping to be a breeze, lifting weights to be something she could do quite casually. She was a total gym bunny, lithe yet strong, the perfect figure exactly like she wanted it.

She was a competitive woman who loved putting others to shame. Jill was the kind of person who saw people next to her on the treadmill and loved to slowly crank her own speed up and watch them desperately try to keep up. She never needed a playlist. The groans and panting of others was music to her ears.

The disgruntled grunting of fat girls was her favorite song.

Fat girls often made Jill feel sad just as often as they made her feel angry. Jill had so thoroughly dedicated her life to physical fitness, derived so much joy from it, that the thought of anyone being out of shape filled her with an incredible mix of both pity and disdain. Of course, fat girls were also easy competition, so she loved showing off in front of them especially. Jill found fat girls to be greedy, and lazy and disgusting in general. While she might feel bad for them up to a point, ultimately she always thought of fat women as far inferior to herself. Of course Jill found anyone to be far inferior to her, but the fat women really took the cake, literally.

Jill made no attempt to hide her disdain for fat women. Her narrow face was keen to contort itself in front of anyone who was even remotely overweight, especially if she saw them eating. Large, disgusting meals, packed full of calories, that’s what Jill would see fat women feasting on and it filled her to the bone with anger and disgust.

“Like pigs to a trough,” she would think as she shot the women with her signature judgmental gaze. Sometimes she would even say a few very unkind words. Once, she had been so bold enough as to oink at one of them. She was with a group of friends who were all getting salads whens came across this helpless hambeast of a woman stuffing her fat face with a big greasy burger, a second one waiting to be next, and she just felt a sudden urge to really show off, to really shove her own beauty and this woman’s shameless gluttony back in her face.

It was delightful.

Jill was the kind of vain, hot woman who truly believed she was making a difference by making fun of fat women. She was certain that she was changing the world one fat woman at a time not just by shaming them, but by inspiring them to do better. She gave them the push they needed to commit to changing themselves, and she stood there as a model of what they should strive to become.

And Jill certainly did look like a model. She was the seemingly impossible combination of both incredibly firm and incredibly curvy. She was thickly built but tight with muscle. She was statuesque with an incredible figure. Jill had tremendously toned thighs, rich with muscle and able to carry her long distances at great speed with ease. Her arms were firm with wiry muscle leaving her quite capable of lifting things. Jill’s waist was trim and tight. She had well earned six pack abs that she was incredibly proud of and liked the show off any time she was able to. And she was equally proud of her breasts which were large and supple but rode high and perky. She was a stunner with a gorgeous face to go along with the rest of her body. Everyone always told her how gorgeous her face was.

But Jill’s favorite part of her body was by far her butt. Her butt was thick and firm and by every marker absolutely perfect. She loved working out her glutes and showing them off. While others may have been put off by the stares of so many people, Jill relished in it. She loved the way people turned their heads and stared at her phenomenal ass. She had worked hard to achieve it, and she wasn’t ashamed to show it. Her ass was tight and toned but thick enough to fill any dress, any pair of jeans, perfectly.

Jill believed very much in discipline and in keeping up her appearance as a slim and sexy supermodel, a glamorous goddess, a prim and proper princess. Honestly, the only thing she disliked about working out was the sweat it caused. She worked hard to avoid people seeing how hard she worked. 

And the only day she let herself relax was once a month-

Her cheat day. 

It was her secret time, a time to indulge, a time for greasy fast food and sweet fattening treats. She would secretly stuff herself with snacks without stopping to chastise herself. It was the time for Jill to really let herself go knowing that she wasn’t really letting herself go. One day couldn’t hurt. 

Right?

That’s what brought her to Fat ‘n’ Gassy Burger. 

“What a disgusting name,” she thought.

And yet it was the same name, so horrible, that made it so intriguing. It was definitely the kind of disgusting place that none of her friends would be hanging around to see walk into. She could sneak in and out with a greasy little feast for herself with nobody the wiser. They also looked to be incredibly cheap and were running a two for one special. 

It was the perfect cheat day restaurant. 

When she got inside she saw a bunch of people sitting around eating, tearing into greasy looking burgers. Jill was surprised by how many of these people seemed to physically fit. They were nowhere near as in shape and gorgeous as her, of course, but many of them were quite good looking and were clearly slumming it in a place like this.

Maybe it was a cheat day for them too. 

Jill eventually got to the counter and decided on getting the “Fat ‘n’ Gassy Double Cheeseburger.” And since she was on her cheat day and they were offering a two for one deal, Jill decided to order two of them. However, there must have been a bit of a communication issue once she got to the counter. The cashier must have thought that by saying she wanted two, Jill was ordering two to pay for and instead Jill found herself getting four double cheeseburgers. Not wanting to correct the woman and feeling like she might as well really enjoy her cheat day, Jill took her four burgers, along with the order of fries and the soda she had gotten and happily headed home. 

Once she got to her apartment, Jill had to admit that she found the smell of the burgers to be incredibly alluring. 

There was a part of her that told her not to do this, not to act like a greedy fat girl. 

But it was her cheat day. 

Jill  reached into the bag, which was sopping in grease, and pulled out the first of the four double cheeseburgers. She unwrapped it and took a deep sniff of its heavenly aroma. 

It smelt fattening. 

But Jill didn’t care. She lifted toward her lips so close that she was almost kissing it. Then she looked around her empty apartment with the door locked and the curtains drawn just to make sure that nobody was around to witness the sinful, gluttonous feast that she was about to indulge in. 

The first bite of the burger was incredible. In fact, it may have been the best bite of anything Jill had ever experienced in her life. And yet somehow the second bite tasted even better. She didn’t think it was possible but then she kept going and it was like she was being seduced by the burger. It was perfect. 

And then things started to go wrong. 

Jill felt a bit of a bubbling in her stomach, a tightness as her stomach stretched. She put her hands to her belly and felt an unusual amount of bloating. She was used to running her hands along her sexy abdominal muscles, but now they felt like they were there at all. I stomach felt like she was rubbing her slender fingers along a taut rubber ball, a tiny one, but a ball nonetheless. And then…

Pfffft

A small puff of gas escaped her perfectly perky butt.

“Oh my,” was all Jill could manage at that moment. She was human, so the act of passing gas was not completely alien to her but then-

PHHHHRRRRRBBBBBBBBBBTTTTT!!!!!!!

The second blast was like a trumpet, loud and thoroughly unladylike. And the stench from her fart was thick in the air as it crawled toward her nose.

“Disgusting!”

She couldn’t believe such a horrid blast of foul smelling gas could have come from her, and yet.

PPPHHHHHHBBBBRRRRRRRRRRRTTTTTT!!!!!!

Jill couldn’t help herself. The bloating had her rocking and releasing yet another tremendous fart from out her perfectly toned butt. She felt like a linebacker, a disgusting boy passing gas like some kind of foul smelling trucker. But she couldn’t help it. She knew she must have looked ridiculous with her perfect figure, as slim and sexy, gorgeous and glamorous as she was, passing gas like a human fart factory. But it wasn’t going to stop anytime soon. Another burst was building up inside her. 

She leaned forward and let it rip. 

PHHHHHHHBBBBBBRRRRRRRRRRTTTTTTT!!!!

Another trumpeting fart blew out from between her perfectly toned cheeks. As she leaned forward and felt the noxious blast of gas escape her, her eyes fell directly in line with the cause of her gassiness, the delicious burger. 

And her mouth began to water yet again.

It was just so damn tempting. She knew she shouldn’t. She knew what it was doing to her insides. But as Jill sniffed the air again, the smell of her own flatulence was overtaken by the delicious smell of the burger. 

“I guess I’m the only one here. What’s a few more farts?” she thought as she let loose another small putter and grabbed at the burger. 

She took a tremendous bite of the burger and felt the grease running down her chin, but she didn't care. Even as her butt let loose another long whining fart, a warning of what was to come, Jill couldn’t bring herself top. She took a second bite, and a third. 

With every bite the burger grew smaller and Jill’s trim tummy grew bigger. Her belly began to fill with more gas and something more unexpected. 

Fat. 

She wouldn’t find out until much later, but the burgers that she was eating were made with a special formula super enhanced with calories, an insane amount of calories, more calories than one would have thought possible. And that supercharged formula would make her very fat very quickly. It affected a lot of people that night, but we’re not following those people now are we?

Jill didn’t know then how fat she was going to end up getting, but the burger was so good that who could say she would have stopped even if she did?

The burger was quickly polished off and another was fetched out of the bag. As Jill did so, she barely noticed the strange sensation of her bloated belly jiggling, swaying from left to right as she reached into the greasy bag. Jill loved her abs, but those abs were becoming quickly lost. As she tore into the second burger, the definition that she had was gone forever. The muscles that she had worked hard to earn were buried under fat. 

Her belly continued to grow with each new might. The blubber piled on and made her new belly roll outward. It stretched out her shirt and made it ride up to reveal more and more of the plump flesh underneath. The flesh kept coming. Her stomach kept stretching. What started out as a slightly bloated belly blossomed into a full blown gut, a gelatinous sack of fat greedily being filled with food.

Every time Jill, the fitness queen rapidly devolving into a flatulent slob, let out a ferocious fart, her bloated belly rescinded a little bit, but that shrinking became less and less as her flabby stomach kept filling with fat. 

Of course, her stomach wasn’t the only part of Jill that was growing fatter. 

For a brief moment, Jill stopped her eating to catch her breath, and in that brief moment her grease covered fingers grazed against her thighs. Had she not been so enthralled with the taste of the burger that was still dancing on her tongue, she may have noticed that her thighs were already getting significantly thicker… and softer. The thighs that she was so proud of for being thick but extremely muscular looked like they were going slack as the fat that filled them made her muscles look like they were melting as her thighs got fatter and flabbier.

Soon the mushy flab began to mash together as her thunder thighs started to meet in the middle forming a nice fat lap for her growing gut to sag down onto and rest upon. Still, her thickening thighs continued to go unnoticed as Jill went back to biting into her burger. Her thighs began to bounce as Jill happily took bite after greasy fattening bite. There was a real threat with the way her thighs were thickening that she would be forced to waddle about soon, no longer the classic beauty who could strut about confidently or run for miles while barely breaking a sweat. Her formerly toned thighs were already starting to dimple with cellulite.

Fat wasn’t just limiting itself to her thighs. The rest of her legs were growing fatter too. Her calves and ankles were swelling, and even her dainty feet and toes were starting to grow as the fat worked its way downward.

Back up top, Jill’s breasts began to swell subtly as well. They filled the cups of her bra completely and were starting to overwhelm them. As they did so, their new weight also pulled the bra down. Jill’s bra had been designed more for its look and feel than for support, something Jill hadn’t needed nearly as much of before now as her breasts continued to grow, undulating with fat. Now, as they started to sag heavily, the tops of her breasts also became marred by bright angry red stretch marks. 

As her breasts sagged, they soon began to rest on her growing belly, as the flabby mass rose up to meet them, bloated by fat and gas. 

PPHBBBBBBRRRRTTTTT!!!!!

Another massive fart escaped as Jill reached into the greasy bag for the third burger. In the back of her mind, she couldn’t help but notice that somehow this particular fart was deeper than the others, but she was too distracted to think about it further. If she had, she would have realized that her fart was sounding deeper and more resonant because her butt cheeks were growing fatter. 

Her pert butt cheeks were quickly losing any kind of perkiness. The firm muscle that had made her tight ass her favorite body part was being overwhelmed by new fat just like the rest of her muscles. Her buns of steel were becoming sponges of fat, thick and squishy pillows of blubber that stretched the seams of her pants as she leaned forward and took another big bite of burger. Each new bite brought new pounds to her butt which continued to expand. She could see the rich dimples of cellulite that were showing up on her freshly sagging cheeks, but she could feel the way her blubbery butt was pressing against the back of her pants, pushing it outward, stretching the fabric and causing the tops of her bloated butt cheeks to crest over the top of her like flabby moons over the horizon of her waistband. They bounced and jiggled as she ate and farted and with each bite the cycle continued.

She took a bite, she let out a fart, and the seams of her pants strained further as her ass and thighs grew thicker. Jill was quickly looking less like someone who had been an athlete and model her entire life and more like someone who was a lifelong couch potato, a big fat slob who had never given a thought to being as prim and proper and glamorous as Jill had, until a short while ago, been. And it seemed like with each bite she began to care less and less about the fattening transformation that was taking over her.

PHHHHHHHHHBBBBBBRRRRRRRRRRRRRRTTTTTTT!!!!!

Another loud fart blew out of Jill’s formerly fit and now incredibly flabby ass. Each new fart seemed to grow louder as her ass grew fatter, but Jill barely seemed to heed them any mind at this point. She was too consumed by what she was consuming. Inside, there was a small voice in her head that was screaming at her to stop, warning her that something was horribly horribly wrong and that she needed to get control of herself before the damage was irreparable, but that voice was drowned out by the taste and smell of the fattening burger and the sound and smell of her obnoxious flatulence. Nothing could be heard over that.

So another bite was had and more grease and sauce and cheese dribbled down her chin and into her cleavage as her belly surged forward and her ass grew outward. She was turning into a big fat bloated big, filled with fat and gas and she couldn’t even fully realize the extent of her changes because she was too busy stuffing her face. 

As the last of the third burger’s bun was shoved into her mouth, Jill lifted a chunky leg to let out another loud fart and was barely able to get the food down before a tremendous unladylike burp escaped her mouth. In that moment, with her belly stuffed full of three burgers and her blubber butt still passing plenty of gas, Jill was able to pause and take stock of what was going on.

The first thing that she noticed was the smell. The room was thick with the smell of grease of flatulence. Then she looked at the floor and saw the wrappers she had discarded as part of her feast, the floor by where she was eating was a mess of crumbs and garbage quickly tossed aside. She caught a look at herself in the mirror and was shocked at what she saw. 

Her gorgeous face was stained in grease, cheese, sauce, and the sweat that broke on her brow from the exertion of her feast. It was an absolute mess, and worse still-

It was fat. Her formerly angelic face was decidedly fat with a thick doughy double chin that hung down and chubby cheeks that jiggled as she chewed. She looked bloated and piggish with this mess all over her face, and as she poked at her chubby cheeks, she could tell that her fingers hadn’t gotten chubby as well. She could fill her arms, newly coated with fat, jiggle as she threw her hands to her bloated belly. 

Her fingers sunk into the flabby flesh, staining her stretch marked skin with grease as she gave her greedy gut a squeeze. She felt the fat ooze through her fingers as she lifted up her hefty belly and gave it an angry shake. She tried desperately to push the alien fat back into her belly. But all that did was cause another fart to blast out of her blubber butt. 

“This is disgusting,” she moaned as the sour stench of her flatulence tickled her nose. 

“I’m acting like a complete pig and getting f-“

Jill’s hands suddenly flew from her bloated belly to her bloated rear where she began to knead the doughy fat that had turned her prized possession, her tight buns of steel into a mushy blubber butt that her chubby fingers could sink into. It was horrifying thinking about how all of her hard work had turned into the kind of squishy out of shape rear end that she would have happily laughed at others for having. 

And the stink coming out of it too!

She was sure to keep turning heads with a fat ass like this, first toward her with judgmental gazes and then away to try to escape the stench of her powerful farts. 

PPHHHHHHHHBBBBBBRTTTT!!!

“I have got to get that out of control. It’s so… stinky and… humiliating. Prom and proper. I’m suppose to be prim and proper and put together and-“

PHHHHHHBBBBBBRRRRRRRRTTTTTTT!!!!!

Jill felt her stomach groan and knew she had no choice. She had to let out another fart. As she doubled over in pain from the gurgling of gas inside her bloated body and then purposefully squeezed out the loudest longest fart that she could muster up in a bid to relieve the pressure and make herself feel better, she cursed herself for cheating on her diet and getting herself into this disgusting situation. She groaned along with her bloated gut and quickly squeezed out a few more bombs, causing even more sweat to break out on her brow. 

“I’m supposed to be slim and sexy and glamorous. I’m better than this. But look at me, and SMELL me! Holy shit. I reek. I’m so gross. I’m so fat, and flatulent, and-“

Suddenly her musing was cut off by another grumbling of her stomach, though this one was different than the kind of groan that had been signaling another bout of gas. 

“I’m so hungry.”

The normally in control Jill, looked back at the greasy bag of food with its fourth burger still calling her name. She could feel her fat thighs slapping together as she moved toward the bag. She chastised herself even as the smell of the burger had her mouth watering again. Her mouth hung agape, stuck in this moment of desire and fear, paralyzed even as a bit of drool ran down her multiple chins. 

“What’s one more at this point? Just extra gym time tomorrow. It’s a cheat day right?”

Another fart burst out in answer. 

“Uggg. I hate that,” she coughed. 

Still, Jill’s hand reached into the bag and pulled out the burger. 

“I see why they call it Fat and Gassy Burger,” she said and punctuated her statement with another toot. 

“But I guess I’ll just open a window.”

PHHHHHBBBBBBRRRRRRRRTTT!!!!!

At the same time as she let out another tremendous fart, Jill tore into her fourth double cheeseburger of the day. Grissle flew as she ripped into it, and the sauce ran down her chins as her teeth sunk into the deliciously fattening meat. 

But she couldn’t bring herself to stop. Even as she felt her clothes continuing to tighten, no matter how much she felt like a bloated flatulent cow, she was disgusted with herself, but she was too determined to finish off this fourth burger to stop. Everything else was put aside for now. She would make a pig of herself tonight, fart like a barn animal, and then get herself back into shape starting tomorrow. 

The burger was just far too good. 

And as she continued to eat things continued to change beyond just her body getting fatter, which it was. 

As her thighs grew thicker, and the fat pressed together even more than before, Jill felt the flesh pressing against flesh and a warmth started to spread between her legs. Every bite, every burst of gas, it made that sensation grow. It was a pleasure unlike anything Jill had ever known. For so many years, she had known nothing but control, discipline, but this unchecked hedonism, it was as if it had unlocked something in her, something primal. 

Each new bite brought a new wave of pleasure and a low moan from Jill as she swallowed more of the delicious and fattening food. She could feel her pants tightening as her butt expanded further, stretching the fabric tighter. And then-

PPPPBBBBBRRRRRFFFFFFT!!!!

Another tremendous fart drew from her the loudest moan yet. She couldn’t believe something so vile, so disgusting could make her feel so good.

She needed more!

Jill lifted her fat leg and timed her next fart with a massive bite of the burger. The sensation sent her shuddering and at the same time she felt the seam of her shorts burst. She was officially ripping out of her clothes, growing fatter than she had ever thought possible. 

And she wanted more. 

She needed more. 

She growled as she tore into the burger. She snorted like a pig as she stuffed herself, and while holding the last of the burger with one hand, she slid her other chubby hand past her bloated, fat and gas filled belly and right between her fat legs, oinking as she orgasmed. 

The room now smelled heavily of grease, flatulence, and passion. And as she shoved her greedy hands into the bag and stuffed handfuls after handfuls of fries, Jill knew she would need to get more food. This was nowhere near enough. 

As she sucked down her soda and prepared to leave her apartment, a part of Jill begged her to stay, to have some shame and salvage some dignity, to note be seen like this, like the pig that she had become. 

But the cravings were too intense. Ripped clothes and all, Jill let another fart rip and waddled off to her car. 

By the time Jill made it to Fat ‘n’ Gassy Burger, she had practically got boxed herself with her flatulence. Her car was ripe with an odor that had seeped into her stretch marked skin. But she didn’t care. She was here, ready for what she had come for, ready to feast again. 

Inside, Fat ‘n’ Gassy Burger was a madhouse, an absolute zoo filled with customers with the same exact cravings as Jill. Their widening waistlines were ripping pants and popping buttons. Fat bellies and fatter asses were everywhere. She could hear the groans of gas filled stomachs along with the groans of the chairs that those blubber butts were sitting on. Many of these people had been fit just this morning. Now they were hardly fitting into their clothes. They had gone from the envy of many to helpless, piggish slobs, stuffing their fat faces and farting up a storm. 

Jill ignored them all as she made her way to the counter and ordered another sack of burgers. She didn’t even know how many she had ordered, she just sat right down and started tearing into them. 

She couldn’t possibly keep track of how fat she got after that. The only way to measure her progress was the way her clothes ripped off of her. 

Her shorts were the first to go. They couldn’t take anymore of her titanic as and tree trunk like thunder thighs. The rips widened until the structural integrity of the shorts gave way completely. Jill may have still been wearing underwear, but it was impossible to tell thanks to the fold of fat that obscured them from every angle. 

Jill’s bloated belly and the rest of her fattening torso eventually caused her shirt to give way too. Even her flabby arms grew thick enough to rip the sleeves. Her mammoth breasts burst her bra, and all of her fat was free to fly about as she continued to stuff herself with the delicious feast. 

Anyone sitting behind Jill could watch her big flabby ass cheeks shudder and slap together as she farted, but they were all too engrossed in their own fattening meals to notice. 

Fat ‘n’ Gassy Burger was a symphony of button popping and flatulence, and Jill was just another member of the chorus. 

If she could have seen herself looking like this she would have laughed, an hour ago experiencing this she would have screamed. But now she was resigned. She was a fit girl no longer and a fatty forever. 

She was just a fat flatulent slob and doomed to be such for the rest of her life. She knew it and all that thought did was make her eat even more. 

It was her cheat day after all.