Jen's monstrously terrifying barrage came to an end just before her big ass completely sandwiched you between itself and the chair's backrest but you were too busy feeling like you were dying from noxious gas poisoning to really notice. Plus, your surroundings were uncomfortably warm and a thick cloud of nasty fumes kept surrounding you.

"That was brutal" Lillian said with a sincerely surprised look while Jen once again sighed cutely in relief. Apparently, she hadn't even noticed just how much deadly gas she had unleashed all over you, the only thing she had been focusing on was relieving her bloated belly but when she snapped back to reality she still heard Lillian teasing her.

"That wasn't anywhere near as much as you let out" Jen replied. Then she looked down from over her shoulder and struggled to see you as the great curvature of her own butt obstructed most of her sight. Her eyes widened when she realized how much smaller you had become.
"Did... did I shrink him that much?" She blushed, having noticed that it took Lillian many more farts to get you down from normal size to an inch tall.

"Actually, he shrank that small after your second fart. Pretty sure this is his limit" Lillian grinned, making her friend blush harder "But hey, isn't this the size you said you wanted?"

Jen smiled in response but kept blushing, Lillian was right. During one of several times that Zuemy shared some of her personal kinks with them, she had made them do some imagination exercises so they could try to see some of it and maybe get the appeal of it. Both girls pictured you in those scenarios and the one she liked the most was where you had been made small enough that you could explore her body like a planet in its own right. The idea of having you walking around the vast, round expanses of her massive assets turned her on quite a lot, and even more so the idea of you massaging, kissing or getting smothered in between them.

Jen realized that her big butt was really close to you and she could only try to imagine how spectacular the view must have been, so she slightly wiggled her hips, making her cheeks jiggle and wobble seductively and those motions also made her already skimpy red thong sink deeper them.

While you still coughed and gagged while your lungs worked overtime to rid themselves of the toxic stink that permeated them, you had heard the girl's entire conversation. The fact that their voices had an ominous booming added to them as if they were gigantic goddesses of some sort gave you chills, as far as you were concerned, you might as well be. You didn't even know how small you were now but one thing was for sure, when Jen began to shake her immense ass and it looked like two round, pale planets began to shift and ripple, almost as if the ivory substance you saw was a liquid rather than a solid.

'Since when does Jen's ass shake like that?' You raised an eyebrow. You knew that Zuemy, Cindy and Lillian were the ones in your group with the actual big, fat but still gorgeous booties that jiggled and rippled with minimal effort. You had only caught passing glances at Jen's but you were under the impression that hers was firmer, as she used to play volleyball up until when last year started, suddenly quitting for no apparent reason. Plus she wasn't as chubby as those 3. But then again, maybe you hadn't paid close enough attention?

"Ooh, he still loves it, he can't help but keep staring!" Lillian giggled, knowingly egging her friend on and adding fuel to the fire that had been undoubtedly stoked inside her. Jen's response would still catch her off guard though.

Smiling more, Jen shifted slightly to the side before she scooted back against the chair's backrest, pressing you into her right buttcheek as she did so, letting her soft flesh mold to your tiny shape while she slowly rubbed it against the backrest and by consequence you as well. Since she was sure that you had enjoyed your time between her huge boobs, she figured that feeling that her butt was even bigger and softer than them would be an even better experience for you. Before Lillian could even comment on it or tease her, Jen stood up, making sure that you were still on her generously sized behind as she did.

"Hey, can you snap a few pics for me? I wanna see exactly what it looks like back there" Jen cheerfully asked. Lillian raised an eyebrow but then smiled, this was the boldest Jen had been in a very long time and she wasn't about to stop her before it got really good.

"Sure!" Lillian rushed to her purse and pulled her phone out, then she came back to stand behind Jen and began snapping pics that showed you on her big ass, making sure that you were as visible as her phone's camera could manage, even zooming in for some pictures emphasizing you laying face-first on the enormous, pale and jiggly surface.
"He legit is making your ass look like a planet" Lillian said as she admired the pictures herself. She then handed the phone to Jen so she could have a look for herself. Her blush returned and it became more intense but she had a delighted smile and there was a gleam to her eyes that wasn't there before.

"Oh my god, it's perfect! It's even better than what I was imagining" She giggled, selecting all the pics and sending them to her own phone to keep.

"Looks like you found yourself an asstronaut to explore those big moons" Lillian giggled cheekily. Jen's eyes lit up even more, and she slowly swung her hips from side to side.

So far, everything either happened too fast for you or it caught you off guard, as Jen's ginormous asscheek had pinned you against itself while you were still recovering from her deadly fumes and then it began to rise off the chair, taking you along with it. Scared of falling to your death, you clung tightly to the titanic, plush expanse that you were now laying on. You couldn't help but blush, knowing that you were grabbing Jen's butt although not in a way you ever thought of before.

And then you heard that she wanted pics, which Lillian took. Thankfully her phone had the flash turned off, sparing your slightly photophobic eyes but what made you shudder was Jen's reaction to them, she was sounding really happy about it, like she was enjoying this for real. So far, you thought this was somehow more of Lillian's odd antics that she had roped her into, but now you weren't so sure.

Then you heard Lillian's comment and you looked around, seeing for yourself that it held true, just one of Jen's gigantic asscheeks was like an entire planet from your insanely diminished perspective. And just like before, Jen's reaction was delight. Then you felt as if the entire world began to shift from side to side and you hugged the vast, plush mass you were on top of, feeling how your hands, fingers and even your legs and feel sank into its jiggling mass, almost as if it were some kind of quicksand.

"He's... he's actually hugging my butt!" Jen's eyes widened as she looked at the pics where Lillian had zoomed the camera on you.

"Told you" Lillian said "No matter how big it gets, he'll still like it because it's yours"

'Goddammit Lillian, stop egging her on!' You thought, too preoccupied with holding onto the "ground" to actually speak and not to mention that as you were laying down on her doughy flesh, you'd just get a mouthful of butt before you could utter a single world. Not that you minded too much, being Jen's in particular, but you knew this wasn't the time for that nonsense.

Jen was giddy beyond measure, she wasn't entirely convinced with most of Lillian's crazier, bolder ideas, such as her suggestion for her to fart on you, believing it's simply gross you out and irreversibly get turned off by her. Nor had she believed in full that you'd enjoy her large derriere while shrunken to such a scale. But with all these things proven right in the end, she decided not to doubt Lillian anymore.

"I think it's time for a reward" Jen giggled and reached behind herself, picking you up from her enormous cheek, bringing you around her body until you were facing her.
"You're even cuter like this!" She said as she looked at your diminutive form. You were small enough that the ridges on her fingertip that made up her fingerprint were like small speedbumps, which made you realize that you were a hell of a lot smaller than you first thought.

"Jen! We need to find a way to undo this!" You then shouted as hard as you could, but she merely cooed in response.

"The noises you're making are so cute too!" She said and then gave you a playful wink that would've made you blush if you weren't too horrified to have found out that you were too freaking small to be heard.
"I guess you're eager, huh?" Jen smiled and began to lower you down towards her chest. It had been outrageously huge before, but there was no comparison right now. Just like her butt, these gigantic meaty globes were practically planets in their own right as far as you were concerned. It was a tantalizing view, yet a strangely ominous one. She took her sweet time, bringing you closer to those colossal boobs until you could only see one of them unless you turned your head to see its gigantic twin across the horizon.

The powerful thumping from her heart was loud enough that you could hear it even without direct contact with her skin, feeling its vibrations just like those from a giant speaker in a concert. But then, a louder noise made her freeze in her tracks, a deep, powerful series of rumbling groans that came from farther below, from her stomach. You froze as well, feeling scared, knowing what was about to happen.

"You know, Lillian... I think I understand you a bit better now" Jen chuckled.

"Huh? How come?" Lillian asked with genuine curiosity.

"I think I'm starting to get how you feel" Jen replied "I want to fart on him some more"

Your eyes widened in absolute horror but any and all the screams you would've let out got all caught in your throat. Jen's fingertrip rapidly lowered itself down and went around her waist while she pulled her thong back with her free hand.

"I saw how you were getting blown to the chair's backrest before, we can't have you flying out, can we?" She giggled as she gleefully dropped you down the back of her red thong, letting it snap back into place, devoured deep between her huge asscheeks the moment she let go.