(Chapter originally written by PhoenixStriker)
Time seemed to slow to a crawl as Ashley's hand descended towards the pitifully small tan bikini bottoms you'd gotten stuck to. You could already see a future playing out wherein the oblivious redhead slipped the bikini on without noticing you, forcing you to spend the entire afternoon wedged between her butt cheeks. Desperate to avoid such a fate, you did the only thing you could do while still flattened, and managed a pitiful twitch.
To your astonishment, Ashley froze mid-reach and locked her eyes onto you. She frowned, but then her eyes lit up a moment later.
"Oh, hey, Matt!" She beamed. "So you totally did decide to join me and your sis, huh? That's awesome!" Giggling, the bodacious redhead picked up her bikini bottoms and raised them until you were eye-level with her. "A bit weird that you wanted to be squished to my bottoms, cause that totally doesn't seem fun to me, but, like, I won't stop you!" Worryingly, Ashley seemed genuinely poised to accept your awkward position on her swimwear as purposeful, and slowly started to lower you back to the ground.
With all your might, you pried your head free from the bikini and shouted up to the airheaded girl.
"Ashley, no, stop!" You pleaded. "It was an accident, please help!"
Ashley's eyes widened. "Oh gosh, really? Sorry, cutie. Gimme a sec!" She announced, raising you up again and then sliding a finely manicured fingernail between your squashed form and the bikini. With just a bit of effort, she pried you free like peeling a sticker from a sheet of paper. Grinning at you, she gently deposited you back onto the bench beneath her.
As you started to reform, you gave the titanic redhead a gracious thumbs-up, prompting a cute laugh from her, before she turned back to finish changing into her swimsuit. As she did so, you yourself finished reforming and dusted yourself off, then pointedly stared in the other direction to avoid ogling Ashley's naked body anymore than you'd already unintentionally done.
Turning away let you catch a glimpse of Jenna, who was reclining by the door of the changing room. Your sister had already changed into a two-piece light blue bikini that hugged her modest curves, and she was giving you a peculiar look. If you had to guess, she'd probably known exactly how close you'd come to spending the day wedged into Ashley's ass, and she was probably upset you'd managed to save yourself at the last second. Feeling victorious, you smirked at your sister and stuck out your tongue, earning yourself an annoyed eyeroll.
And then, completely without warning, you let out an interrupted cry of surprise as the meteoric weight of a thousand moons slammed into your body and crushed you into a fine pasty blob.
Your overconfidence had led to you getting cocky, and you'd totally forgotten about the ditzy, forgetful girl standing right behind you. Of course she of all people would take a seat on the bench she'd literally just set you down on. And, unlike someone like Rio who did stuff like that as a challenge to your survival skills, or Jenna just being plain mean, Ashley was as spacey as a goldfish. The blissfully unaware redhead had truly just forgotten you already, and it was yet another reminder that she might actually be the most dangerous giantess in your life to be around.
Ashley wiggled her prodigious rear against the bench as she bent over and adjusted the straps on her sandals, kicking them off and flexing her toes. Every small movement she made ground her unfathomably huge booty against your pitiful body, and you let out a mute cry of discomfort as the redhead's pale flesh smeared you mercilessly. She did stand back up after only a minute, but the damage had been done. The only saving grace was that you were left as a visible stain on the bench, and not glued to her globular butt cheek.
Finally finished changing, Ashley stuffed her belongings into the locker beside Jenna's, then gave your sister a big grin. Jenna's grin, however, was even wider, and even your flattened and mangled ears could hear your sister struggling not to laugh.
As oblivious as always, Ashley frowned at Jenna, a slight smirk in her lips indicating she wanted to be in on whatever joke was clearly cracking your sister up. "Jenna, what is it?" The redhead asked. "Is it my bikini? It's totally too small for me, isn't it?" Ashley glumly plucked at her stringy top that barely even covered her nipples, and pulled on her thong bottoms that were basically just the consistency of dental floss.
Jenna waved a hand casually. "Nothing, nothing." Your sister shrugged. "Just thinking of some joke, I guess. Ready for our sauna session?"
Ashley grinned with excitement, bouncing eagerly and seemingly oblivious to how the simple motion set her gargantuan breasts jostling like crazy.
However, something unexpected happened yet again. Drawing up on reserves of strength you didn't know you still had, you actually managed to piece yourself back together after Ashley's butt had ground you flat, and you managed to reform just enough to shout out.
"Hey, down here! Don't forget me!" You cried, your throat a bit hoarse from the shouting you'd done today.
Already moving to leave the locker room, your sister and Jenna paused by the door. Ashley gasped upon spotting you, and rushed back over to your side.
"Oh my god, Matt!" She slapped her forehead. "I'm so dumb. Totally almost forgotten you again, cutie!" She once more scraped you with her fingernail and dropped you into her palm. This time, though, she clenched her palm around you tightly, clearing not wanting to misplace you again. Of course, her tight hold had the unfortunate side effect of severely restricting your ability to move or speak, and you could only peek out from the crack between her fingers.
Through your tiny vantage, you caught another annoyed look from Jenna. Apparently, she'd wanted you to be left behind on the bench and left at the mercy of the next unaware group of girls using the changing room. Or, maybe she'd hoped you'd ended up stuck to Ashley's butt. A thorough sauna session would have very heavily baked you into the redhead's booty flesh. Whatever her reason, you'd foiled her fun twice now, and you began to fear that Jenna might up the ante soon.
Jenna pushed open the door to exit the changing room. "Sauna rooms should be just down this hall. Hopefully one of them has some extra room for us."
Ashley nodded in understanding, and dutifully followed behind the brunette as the two girls left the changing room and walked down the hallway. Already, the hallway temperature was ten degrees warmer than the changing room had been, and both girls (and you) could see wisps of smoke rising from the wooden floors and walls. Ashley smiled wide with anticipation of the relaxing sauna session, and Jenna too was smiling, though for decidedly less humane reasons.
Stopping at a set of three doors, Jenna noticed that each door had a small sign posted on the front of it. She glanced at Ashley, and took note of the redhead smiling absentmindedly and staring around at nothing in particular. Realizing that Ashley wasn't noticing the signs at all, Jenna's grin spread wider. She now had full control over how this sauna session went, and she made a mental vow that there was no way her squishy little brother was getting out of it unscathed.
What do the signs on the doors say, and which one does Jenna choose to enter with Ashley?
1) The sign says "Unoccupied Room". True to its claim, there's no one in the room, so it's just Jenna, Ashley, and you. Jenna has plenty of ideas about how much fun she can have with such an close-quarters experience with her tiny brother and airheaded best friend.
2) The sign says "Partial Capacity". Choosing it anyway, Jenna and Ashley squeeze into the tiny sauna room alongside two other strangers, who are of course both unaffected girls. With four girls and one tiny you cramped into such a small tight space, there's no way something bad isn't bound to happen.
3) The sign says "Tinies Only". Ignoring the stated rule, Jenna enters the room anyway, and Ashley bounds happily inside, none-the-wiser. The three affected tinies in the sauna already, however, are absolutely dumbfounded by the new arrivals, and Jenna is positively buzzing with excitement at the idea of turning the walking disaster that is Ashley loose on both them and you.