Bikini/Thong shopping with Sheila pt. II
"That thong looked really good, and I think we could enjoy it at home" She said, almost whispering, making your blood run cold.

Sheila then grabbed a pair of white panties. They looked fairly normal, they were triangular in shape, and you could imagine they'd reveal some of Sheila's bulbous behind, but not the entirety of it. It seemed nearly out of character for her to choose something not so skimpy, but you were grateful. Just as last time, she put you right in the back portion just as she pulled them up. It was only then that you realized why Sheila hadn't bothered with a skimpier version, it was over 3 sizes too small! despite looking wide, that fabric was nowhere near enough to cover the vastness of her celestial body-sized cheeks, and instead, that fabric got swallowed into the grand rift that separated her meaty globes.

However, this time Sheila didn't begin teasing you right away, in fact, she stopped in her cracks for a few seconds, making you wonder what was up, until suddenly, you felt a titanic object begin pushing you and a good portion of the panties from behind, up and down as well as side to side into her doughy cheeks.

"Oh my god! What is this made of? It's so itchy!" Sheila complained as she reached into her crack to scratch her huge ass, inadvertently pushing them even deeper in, further worsening said itching. She even had to reach with both hands to desperately scratch her crack and make a vain attempt at readjusting the panties. She did this for a few minutes, but was relatively quick to give up on that, although not on the panties themselves.

"Uh, sweetie, do you think you could scratch Auntie's booty? I don't think I can reach well myself..." She pleaded
"You, on the other hand, are pretty deep..." she said in a flirtier tone, wedging the panties even deeper in and clenching her cheeks, which she meant as a 'hug' to 'encourage' you.

You couldn't believe she was asking this of you. Even if you tried, it'd take you hours just to scratch a few square inches of her massive crack, and it was far too big for you to do in any realistic time frame, not to mention her farting from before left you quite beaten up. Still, you didn't want to think of what she'd do if you didn't obey, so with what energy you had, you tried scratching the huge blubbery walls that engulfed you. You heard her sigh in pleasure, so it seemed to work. But then, you heard the dreaded gurgling again.

"Hmm... that feels good, hon, but I need more..." She said "I know... you already have your hands full with this big butt of mine..." She added, cupping her cheeks with both hands, her fingers sinking into their squishy softness while she shook them a little, getting a feel of how much they could weigh.
"I'll try to help you... but you should probably hold on tight" She briefly laughed, feeling again pressure building up in her belly and going south. She was going to use a very old technique she used to use to scratch her butt or undo wedgies.

'Please, don't do what I think you're about to do...' You tiredly prayed to the Heavens, to any who would listen.
"I don't know for sure if you're listening in, but I suspect you are... please! This reality is horrible! Get me out! Anywhere but here!" You shouted, betting on the possibility the people behind the experiment that sent you here were listening. The groaning and gurgling grew louder, and the walls slightly rumbled
"Do you hear that?! THAT is hell! Any volunteer you send here will face a fate worse than death! Scratch this world off your list! It's no good!" You yelled exasperatedly, but you heard nothing in response. You then wondered if maybe the phone would operate as a black box, and they would only retrieve it, and its messages after your demise, which you were beginning to feel would come soon at this rate.

Unaware of your pleading, nor your desperate rant, Sheila simply let the pressure build up in her behind, unlike before, this time she made an effort to hold it in, because she needed to make her winds as explosive as she could. She wondered how bad it would be to you, but then assumed that her plush cheeks kept you nice and safe and that at most, it would just be a little wind that'd pass by.

You were confused when you kept hearing the groaning gurgles getting louder, but Sheila hadn't unleashed her thunderous monster yet.
'Maybe she's trying to hold them in for once...? If she only took me out of here...' You thought, but knew it wasn't very likely to happen. That she were holding them in now of all times also seemed rather odd, since she had no issue blasting you before. What could have changed? However, listening to the angry sounding groans and gurgles from the dark depths unnerved you, it was getting louder than you had heard so far, plus, some of the noises sounded like those of an old ship's hull at sea, and others like an ominous thunderstorm loomed overhead.

Sheila shuddered, she seldom held her farts in for this long, and the gaseous pressure build-up in her backdoor made her feel some tingles, even though keeping the winds that swirled inside her contained gave her some discomfort as well. When she felt that the pressure was finally going to become too much, she let it out, but rather forcefully instead of just letting it slip out, and as a result, a much bigger, rumbling roaring typhoon of a fart erupted from the depths between her gigantic cheeks.

You could have never prepared. You thought her very first fart was a decent reference of the upper limit on how powerful Sheila's gassy explosions could get. How wrong you were... Just when the noises from her gurgling guts were becoming unbearable on their own right, there was a sudden eruption, nuclear-like blast, so huge you felt it could even put the friggin Big Bang itself to shame, all laws of physics be damned. The noise was extremely deep and bassy, and you kind of heard it, though your ears were quick to go numb from the noise's sheer intensity, and mostly you fell it as it rattled every single bone in your body like a bunch of twigs in the middle of a tornado. You could feel your entire body rippling with its violent force, which only added to the quaking madness as your gelatinous surroundings wildly rippled as well. The wind torrent that blew into you in itself was also way huge, you felt like a speck of dust before a tank's cannon right as it fired.

Since these were panties she was wearing, they were easily and instantly blown out of her crack, and you quickly followed, getting slammed into the white fabric wall with so much force you were surprised you hadn't gone 'splat!' from it. Your whole body felt numb, and the fact you remained conscious felt more and more like either the people of the experiment, or a deity up there were just getting a kick out of your suffering. Meanwhile, Sheila was pretty satisfied, as that lone super-fart singlehandedly undid her wedgie, and even relieved her itch. What she failed to account for was that she didn't let up just one giant fart build up. Several other bubbles in her gut were crammed so tightly they merged into larger and larger bubbles, and soon they made their presence known. No longer needing to hold them in, she nonchalantly let them out as before, having no idea that to you, she had just unleashed a nuclear war kind of Apocalypse unlike any other she had previously done upon your tiny self.

She found it hilarious as her huge farts loudly roared and vibrated their way out of her vast derriere, wiggling her large hips to give their noise an echoing effect. She also noticed that this somehow made them louder too. She made her giant cheeks bounce and clap, adding to that, confident that at the very back of her panties, none of this was hitting you too hard, which couldn't be further from the truth. The now taut fabric of her panties made for a much harsher wall that was way less forgiving than her squishy cheeks, and as each humongous booty blast blew into you, it felt like a hydraulic press trying to crush you. You had no idea Sheila's gas could get this bad, and suspected neither did she.

Like before, just when you felt you were at your limits, the monstrous storm stopped. Sheila took those panties off and looked at you, but not noticing how badly beaten you had been left.
"Well, that was fun, but these were way too itchy. Too bad, they look good, and weren't even all that expensive" She shrugged.

"Now, let's try something different" She said as she grabbed a red bikini bottom piece, a tad smaller than the white panties, but still in that mostly triangular shape. But now you knew that at that size, it was no match for Sheila's monster booty. Too weak to protest, you could just look up in horror as the red fabric beneath you raised you into the air until you were pressed into her gargantuan cosmic chasm of a crack. You noticed that unlike the others, this fabric felt like it was synthetic, like lycra or nylon, but you weren't sure, since you didn't really know the finer details about those materials.

The bikini bottom felt nice and snug for Sheila's taste, as she actually enjoyed in a way getting her underwear or bottoms wedged into her crack to show off her butt's sheer size. The material felt good as well, unlike the previous one. However, one thing she overlooked was that this piece of clothing soon trapped the abundant heat that her generous behind radiated, making it sweat.

You wondered how much longer it'd be until Sheila farted again, but instead got caught off guard as a giant drop with a pool's worth of sweat splashed into you, thoroughly drenching you, stinging your eyes.
'Now it's not just farts, but sweat too?!' You mentally screamed at whoever was up above, and to the people behind the experiment that warped you into this terrible, terrible new world. More sweat began to collect all over her larger-than-planet cheeks and to you, literal rivers of salty madness began to pour down from miles and miles above. You let out a blood-curling scream as one of such watery torrents engulfed you and dragged you down...
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May 12, 2023