Sisterly Squashing Shenanigans
"How's it looking from over there?" Ariadne then asked.

You gulped, you could see her muscles at work, it was an awe-inspiring display, and the fact that you've already found yourself squashed under all that densely packed mass added an extra layer of fear, her huge butt bounced almost ominously, as if letting you know that at any moment it could plummet down and flatten you beneath it.

More worryingly, the other you that belonged here may have known what she was talking about, but you couldn't possibly tell if what you were seeing was what she wanted. You closed your eyes, trying to think... it felt like something were tugging at you from the depths of your subconscious, and it was telling you the answer, giving you a strong hunch. You normally only made affirmations about stuff you knew for sure to a reasonable extent, but this time that hunch was all you had, and it felt particularly powerful for reasons beyond your own understanding. With some hesitation, you decided to respond.

"It's alright, you're doing well!" You said, feeling internally guilty about saying what might be a lie with such confidence, even though part of you felt like it was indeed true.

Ariadne couldn't help but giggle, mistaking your hesitant reaction and apparently timid behavior for being embarrassed or even flustered, she always found your reactions to her mom's and her own antics cute, to the point that she'd sometimes pick you up right there and then to be stuffed in either cleavage of hers. Something about it made her really want to feel you close to her and she'd usually do it in the most literal way she could get away with.

Compared to her friends, Ariadne herself had been relatively tame in college. It was true that she was fun-loving and would roll along with her friends' shenanigans most of the time, but she rarely ever initiated those herself. Plus her physical appearance served as quite the powerful deterrent, few if any micros felt brave enough to approach a woman built like her. As a result, she often only dealt with pervy micros that were trying to get smart or fresh with her friends, or with questionably obtained ones, some of which were most likely intoxicated in some way. A few had been somehow brave enough to want to try having fun with her though...

Having grown with a micro brother herself, she had a little more in the way of sensitivities regarding them, so she was often fair and merciful, even when some did manage to piss her off. The main issue for her was that most other girls around seemed to lack those, the way they treated them seemed to range between utterly possessive to dismissive, basically meaning that to them, micros were mostly toys in the worst case scenario, or pets at best. She couldn't judge how others would go about their business with micros, but she'd at least draw a line with the one that mattered to her the most.

This is why she appeared so stern with her friend Isha, who precisely had quite a reputation with her treatment of micros at college, having a remarkable ability to pick them up, either by using her womanly charms or simply by sweet talking them into it, and that always ended up subjecting those to plenty of questionable situations...

'Maybe I can have Blaise meet the girls later on a better setting' She thought with a quiet chuckle. She'd done these exercises so many times that her body could pretty much do them on autopilot, and she was free to think about whatever she wanted while at it, a little something she'd come to enjoy over the years.

While Ariadne had a little moment of reflection, Isha observed her from a safe distance, knowing that the thicc Amazon had pretty sharp senses even when she seemed distracted. So far, piecing together what she had told her herself and seeing how protective she was of her little brother, Isha knew she had a golden opportunity to prank her friend.

From Jordana she'd heard that she had a habit of keeping you really close to her. She smiled a little, managing to spot your diminutive form like a speck on the middle of her bike seat while Ariadne kept pedaling, one of her preferred ways of warming up and on days where she'd work her butt and thighs, she'd put special emphasis on it. Luckily for her, with the way she was exercising, she already had her first prank served on a silver platter...

As she mentioned to the girls earlier, Ms. Flatum heavily invested into improving the gym, using part of the money from her large profits from the Salsa Shack franchise and the Mexican themed country club, both business having become an enormous success in the city for many years now. And among the many improvements they made to the gym, the stationary bikes they got were both sturdy yet surprisingly high tech, being able to even tell the user's heart rate, body temperature and blood pressure in real time as long as they held the bike's handle.

But that wasn't what Isha was thinking about... Another neat thing in these bikes was that the seat's height could be adjusted via the touch screen on the middle of the bike's handlebar to the user's liking. And most of the bikes' functions could also be activated remotely. Isha struggled not to giggle noticeably, playing with the bike's controller in her hand, which she had hidden in her pocket. She had been having a field day with so many micros around and had already pulled plenty of shenanigans on them with absolute impunity, but getting the chance to prank one of her friends was too good to pass up.

Isha then pushed a button that made the bike's seat slowly rise, and in fact, the mechanical movement was so subtle that neither Ariadne nor yourself noticed, you were more concerned with looking at her huge butt and trying to pay attention tot he way her muscles moved while still feeling worried about getting squashed, which despite not being necessarily lethal, wouldn't be a walk in the park either. However, you eventually sensed a vague upwards motion coming from below, and Ariadne's already massive rear looked bigger and bigger, but it made no sense, she wasn't lowering her butt, yet it seemed to be getting closer.

'Am I going crazy already?' You thought with some concern 'If I am, man, sanity's a lot more fragile than one thinks'

Meanwhile, Ariadne had no idea that anything unusual was going on, she was just pedaling at a moderate pace, since she wanted to maintain her butt and leg muscles strong, not make them grow much more, something she was a little self conscious about, paradoxically. As she'd told you herself, she liked being strong and healthy but she didn't exactly want a body that felt as if it was made of granite, though her chiseled abs were an exception. She kept on pedaling, feeling how her large cheeks clenched and relaxed, bouncing up and down, having a decent amount of jiggle of their own, and she could picture you being all embarrassed about having to look at it, which she only found all the more endearing and cute.

You looked around, it still made no sense, she was getting closer, but you could see her legs, she wasn't bending them. Your concern about your sanity already starting to slip through your fingers grew, and you scratched your head trying to find a logical explanation, and you eventually got so lost into this that you forgot that the most important concern was that your big sis' enormous ass was getting closer and closer, that is, until everything suddenly went dark, and you felt an overwhelming weight resting on top of you. The soft flesh was radiating off so much more warmth than before, owing to all the movement those powerful muscles had been performing up until right now. You also got immediately got drenched in sweat, which was no surprise, what little air was around you actually smelled salty, in a way that was even more intense than the sea's.

'Huh?' Ariadne snapped out of her thoughts, finding herself sitting on top of her bike seat but without any recollection of having done so 'I don't even feel tired, why did I stop all of sudden?' She wondered, and then she realized that you were still on the bike seat, and had been spotting for her as she had asked of you. She bit her bottom lip, feeling playfully guilty.

"Sorry Blaise, guess you got some quality big sis time for free" She chuckled, deciding that she might as well take a breather, letting more of her weight rest upon the seat and by consequence, yourself. You had been caught under her left cheek, close to her crack, but this time since her weight was pressing down harder, you weren't moving to the sides as it had been the case with Isha.
"You could say we both get to enjoy the fruit of my hard work, huh?" She then said, slightly grinding her big ass on the bike's seat, which was definitely not nearly big enough to truly fit a derriere of her caliber.

Her crack swallowed more of the seat as she rested on it again, and the pressure that her butt exerted on it also allowed her to feel you more clearly, which she enjoyed, in her personal view, it was no different from casually hugging you. Sometimes she had been teased by Jordana for being rather touchy feely with you, but that was just the natural way she displayed affection, and with you being one of the things she loved the most, you were bound to get a whole lot of it, whether you wanted or not.

"Okay, okay, I really didn't mean to sit on you like this" She said with a laugh "Though I won't say I mind too much... but at least I promise you Jordana won't make the same mistake... I don't want my little bro to get flattened like paper" She laughed some more, and then she heard Jordana sneeze in the distance, which only made her laugh harder. Unknown to her, she wasn't the only one enjoying a good hearty chuckle; to say that Isha was delighted her first prank on her went perfectly was the understatement of the century.

Ariadne then got up, with Isha sneakily reverting the seat to its former height without letting her realize, but when Ariadne stood up, she felt a familiar tiny lump lodged between her sizable cheeks, although on the outside of her leggings. She smiled again, blushing a little "Awww, slow down lil' bro! You're gonna get real up close and personal on the next exercise, but I need you to keep spotting for me right now, 'kay?" She said, fishing you out of her crack and putting you back on the middle of her seat.
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May 12, 2023