Sam ran for his life, hoping not to be crushed behind his mother's incredible butt-cheeks, he didn't even think about where he was running towards, instead he just hoped for the best to happen, however "the best" in a bed with two fat-assed women only implied not to be squashed by one of their juicy derrières.
Sam went through his perfect spot in the plane at the middle of the bed, back to the indentation made by Mia's heavy booty, his run basically turned into a series of stumbles towards his aunt, that ended with his face stamped on the jiggling globes of flesh, sending waves on her ass that repercussed on you.
Shannon finally sat down on the bed for then lying besides her sister, unknowing that she just forced his son to choose between which booty he would be next to, none of them being a plausible choice for a good sleep.
Sam put his hands in Mia's colossal right asscheek, trying to unstick his face from the soft flesh, fortunately, it wasn't that hard since her behind was sweaty as hell, however it also meant that he had to swallow her ass-sweat that forced its way into his mouth. After unsticking, Sam thought "Iuuugh, I don't think that I'll ever be able to get the taste of Mia's ass out of my mouth… well, at least it wasn't my mom's" trying to find something good out of this situation. As trying to prove that nothing good could came out of this, a huge (from Sam's perspective) drop of sweat fell in Sam's tiny body, bathing him in his aunt's salty ass-liquid. "Fuck!, if my mom wasn't here I would be sleeping peacefully under the sheets, instead of being drown in this bimbo's ass-juice, could this get any worse?" Fate clearly had something against Sam, because right when he ended that sentence, Mia started rolling in her sleep. Sam could only stare in awe as the biggest rump ever was threatening to crush him into an unrecognizable pulp. He saw it in slow-mo, her toned cheeks jiggling like crazy in the air before starting to fall. The planet-sized rear end of Mia made him feel like less than a bug, in fact, for her behind his body meant nothing but a spec. Mia's colossal ass landed on him, entrapping his entire body in the great-canyon that was her asscrack. Sam was absolutely paralyzed, no mattered where he looked, Mia's humongous bottom was all he could stare at. The sweat from her cheeks and crack quickly started to drown him with its stench, and before he could even think about something to do, a blast of air came from above him, it wasn't only horrible to smell, as he could swear he was tasting his aunt's last night dinner, but also humiliating, as she was maintaining an entire control on you only with her ass, and she wasn't even aware of it!
Sam started to think; the only thing he had achieved since his aunt arrived was getting sat on, bathed with her stinky sweat and then getting farted on… and it was only the first night.
Looking upwards, Sam saw Mia's sweaty booty-shorts, and thanked god she wasn't wearing a thong, even though the stench was still accumulated in her shorts, at least it wasn't all over his body, and it also was a barrier between his minuscule ant-sized body and Mia's monstrous asshole.
Sam tried once again tried to sleep, but the heat was giving him a headache, and occasionally Mia gave a babbling for then grinding her ass against the mattress, giving his body a burn by the friction produced by her restless mountains of ass-flesh. Eventually he just accepted that he was doomed to a night full of his titan-sized aunt's booty.
Shannon had been awake all this time, the constant move from her sleeping sister haven't made it possible for her to sleep, because right when she was about to fall into Morpheus's realm, Mia changed her position on the bed or grinded her rear. "Maybe I should just go to sleep in the couch, Mia makes it impossible for someone to sleep with all of her struggling. I can't even imagine how hard it was for Sammy." Shannon thought, then she stood up, and went to the living room where the couch was. If Sammy had known Shannon would quit so quick, he definitely would have preferred to be squashed under her butt rather than be stuck all night with his aunt's huge rump. Sam wished Mia haven't even came to his house, as much as she was a loving aunt, her cluelessness was in most cases the reason behind Sam ended in HER behind. His wishes were once again interrupted by Mia's roaring ass farting out a powerful blast that almost made him pass out from the smell and incredible pressure, and it lasted for a few seconds, which felt like hours, as it was like receiving a constant kick in his whole body while at the same having to deal with a stench worse than a garbage can AND a deafening, ear-raper thunder.
While you were basically in hell under Mia, she started mumbling some sentences, and her body suddenly started to move even more. She raised her hips, while saying "Oh Sammy, it feels SO GOOD to have in there, please keep it up!" He was stuck in between Mia's jiggling cheeks, so when she raised her hips, Sam went along with her huge butt, after hearing what his aunt was saying he screamed: "DAMN IT MIA!, IF YOU KNOW THAT I'M HERE THEN GET ME OUUUUT!" The sleeping giantess couldn't even listen to Sammy, so her automatic reaction was to drop her ass against the mattress once more, once again beating the shit out of him with her incredible derrière. Sam wasn't only squashed By Mia's giant asscheeks, but when the goddess dropped her most biggest asset, he was also sent deeper in Mia's asscrack, putting him next to her minuscule booty shorts, with even more pressure from the tight mass around him. Sam decided that maybe screaming against her sweaty ass could help her notice, so he did: "MIIIIIIIIIIIIIIIIIIAAAAAAAAAAAAAAAAAA" with all the air in his lungs, he swore this could even reach her ears, however, the reality was that for Mia's monumental ass, his scream was nothing but a little buzzing in between her nice white cheeks, her body only reacted by clenching her cheeks. Sam was put into even more pressure as Mia's booty tried to suffocate whatever was causing the buzzing, he couldn't resist that much pain and he passed out... At least for a few minutes, as Mia's almighty cheeks decided that let his nephew sleep calmly was something that they couldn't allow. A huge fart was shot from Mia's perfect rear end, it only lasted a second, but it was enough to wake Sammy up. When he woke up, he started crying, knowing that no mattered how much effort he put into escaping, Mia's goddess-butt could avoid it with just one clenching or fart. Sammy screamed: "What do you want from me?, isn't this situation humiliating enough?, I'm at the mercy of a giant ass, nothing could be worse" even in this moment of reflection, Mia's enormous ass decided to humiliate him even more by farting on him when he ended that sentence.
That's basically how the night went, Mia's huge rear end crushing him countless times, bathing him in its disgusting ass-juice, and farting his body with its terrible bursts of rotten-air, Sam didn't sleep for the whole night, and that wasn't even his main concern, as his body had deformed into some kind of gum that was almost fused in Mia's left butt-cheek.
Finally Mia woke up, she sat down on the bed and proceeded to stretch her arms, in the meantime, Sam was being crushed with an unbelievable intensity as him aunt's ass was concentrating its weight right in the middle, exactly where he was. Mia said: "How did you sleep Sammy?, I bet it was great! After all, you couldn't have been cold or anything… plus, you had one hell of a good view!" she slapped her ass right after that, sending waves all over Sam's spec-sized body. "Oh Sammy I'm sorry, but you'll have to cover your nose" Mia blasted away the remaining of her toxic fumes with one Atomic fart, Sam took the full force of the fart, and his body became even more infused in Mia's colossal left butt-cheek. "Ok teeny tiny Sammy, we have to go to the kitchen to make breakfast, I'll wait you there!" not knowing that Sam's body was awfully squished under her titan ass, Mia stood up and headed to the kitchen, with each step crushing him and pushing him even deeper into his captor rear end.
Then…