Without pause, Kierra flung you roughly onto her bed, then crashed her enormous ass right on top of you. It was larger than average to begin with, but now that you had shrunk back down, it was nearly twenty times your size. You didn't even take up a quarter of one cheek. It reminded you of a few days ago when she had gotten you into this mess in the first place, though back then she hadn't been crushing you with her full weight. Another BBBRRRTTT rang out, muffled into the sheets to Kierra's ears but all too audible from your vantage point. Caught in the stream of her gas, you dwindled yet smaller, until soon even the stream coming from her anus outsized you, you could feel it blowing past you in every direction.

After a full minute of flatulence, mercifully, Kierra got off of you and went to pick you back up. She had to squint to make out your roughly triangular shape, now just a tiny speck within an ocean of her bedsheets. She pinched you delicately between two massive fingernails, and brought you up to her eye for a better look. From right in front of her face, her quiet ramblings to herself were like an earthquake of sound. "HAHA WHOOPS, GUESS I OVERDID IT A LITTLE. OH WELL, I ALREADY KNOW THEY GROW BACK."

Setting you carefully on top of her nightstand, Kierra got dressed in a fresh pair of panties and headed downstairs, to do what you weren't exactly sure. It seemed that for the next while, you had no choice but to sit in silence within the gargantuan bedroom, the stink of Kierra's dinner still hanging to your threads.

---

By the time you came to, you could tell you were already in motion. You opened your eyes, but wherever you were, it was still pitch black. You were confused for a moment, but remembered that Kierra had talked about giving you to someone yesterday. Based on that, you were willing to bet she had stuffed you back in her purse.

Your world rattled and shook for some time until a loud zipping sound brought light streaming down onto you. Looks like you had been right.

"Ta-dah! So here they are, these are my prototype for uh… size-changing cotton!"

"You mean like how it shrinks in the wash? That's not exactly what we'd call an innovation." You heard a second woman's voice dryly reply to Kierra's pitch, clearly not impressed.

"No no, it really shrinks on command! Well, sort of. You won't believe me when I tell you what the trigger is."

"Try me."

"It's uh… It responds to gas."

"What, you mean like helium or something?"

"...No, like uh… flatulence. You have to fart on them."

"Okay, I don't need to hear any more of this. You're clearly just trying to mess with us here, which I don't appreciate, but policy is policy. At least you came out to see us."

"It's true though! I swear!" Kierra only now realized just how crazy her story sounded, and though she was normally pretty comfortable in most social situations, she felt a tinge of embarrassment as she realized the FuturoChic receptionist didn't believe a word she was saying.

"Mhm. Well, here's $200 cash. If you get any better ideas, feel free to come back, but we're only paying you the once."

Kierra froze as she tried to come up with a way to convince the receptionist that she wasn't lying, but she could tell by the look on her face that this was her cue to leave. Not wanting to prolong the awkwardness further, she accepted the money and headed out the door, wondering if she had made the right decision after all.

"Ms. Bellevue, will you take these and put them in with the other low priority prototypes? From the sound of it, maybe don't use your bare hands for this one."

"U-understood, Mrs. Carroway. Right away."

You found yourself whisked away by Ms. Bellevue, who turned out to be a pretty-faced young woman of not more than 20. Probably an intern, if you had to guess. The identity of these office workers, as well as what exactly Mrs. Carroway had meant by "prototypes", would be on your mind plenty for the next week and a half as you sat quietly in a cardboard box in the corner of this strange building. With no one to talk to and very little to see, you grew bored almost immediately, but you at least had the solace of a peaceful rest. This sure as hell beat getting farted on all day.

---

One day, you heard an unfamiliar voice approaching your box. "I'm beginning to think crowdsourcing new fashion ideas wasn't our best move. So far nothing has worked out at all! Time to move on to the rejects, I guess." The voice's owner grabbed you from on top of the pile of clothes and brought you back into the room you recognized as the front entrance. "Hey Ms. Carroway, what's the deal with these? Look like ordinary panties to me."

"Ah yes. Those. Feel free to do whatever you like with them. Some lady came in here trying to pull a prank on us."

The woman holding you cocked an eyebrow. "Was it a good prank?"

"Hardly. She tried to get me to believe that fabric would shrink when in contact with…" The receptionist, trying to avoid the embarrassment of repeating the "crude joke", mouthed the final word silently. "...Flatulence."

"Pahaha, I gotta admit, that's pretty funny. Well thanks for the tip, Mrs. C."

"Mm. No thanks necessary."

---

Now in a room lined with strange machinery, the researcher woman held you up to the light, twisting and turning your panty body to try to get a better look at you. "Huh. Not much I can do with these, really. Guess I'll set 'em aside for now." Placing you on a nearby table, the woman left the room and headed down the hall to grab another prototype from the box. Before she could get there, however…

"Ghhn…"

"Whoa, Lucy, you okay? You look positively green!"

The office intern had just stepped out into the hallway from the bathroom, her cute face twisted into a grimace.

"I'll be fine, just some bad indigestion is all. Not sure what I ate."

"Well let the boss know if you need to go home early, wanna make sure you're takin' care of yourself and all."

"Thanks Ms. Jones, I-"

"Hey wait, I got a great idea! Can I borrow you for a second?"

"Um sure, I guess. I may need to run back to the bathroom though…"

"Perfect!"

"Huh?"

"Okay listen. You're not gonna believe this, but these panties, this woman said they'd get smaller if you eh… if you pass gas on 'em. I know she was probably pullin' our leg, but do you think you could help me try it out, seeing as you're in the perfect condition to?"

Lucy paused, clearly not expecting the odd nature of the request. "Um, okay. Could you leave the room, though? This is super embarrassing."

"Ah, sure, Luce. Just holler for me when you're… done."

Sitting on the table in the lab, you were surprised to see not the original woman from before, but the office intern walk into the room. She made a beeline for you, and you couldn't help but feel a little smitten as she looked down at you, biting her lower lip in an adorable way. If only she knew you were human, maybe you could have asked her out.

Instead, though, you looked on in horror as she turned around and sat right on you, her business slacks being the last thing you saw before she smothered out all light with her modest rear. Unfortunately, you were starting to get used to being sat on, but you weren't sure you'd ever fully get used to…

PFFFFFFFFFSSSSSSSSSSHHHHHHHHHHHHH

Slowly and quietly, Lucy let out a long fart right on top of you. Instantly, the smell assaulted your senses, an unholy combination of sulfur and rotting fruit. Though she only did it once, the single fart long overstayed its welcome, lasting a good ten seconds, maybe fifteen. It felt like ages before she let up, standing up and turning back around to look at the aftermath for herself. Her cheeks bright red by this point, you watched her jaw drop as you shrank right before her eyes. "Ms. Jones!! You'll want to see this!!"