The deskchair
by saturnguy

18 year old Tom smiled as he watched his parent's car exit the drive way and speed down the street. He couldn't believe that he had the house to himself for most of the week while his mom and dad went on a business trip. As Tom thought about the sick parties that he intended on having in his parent's absence, the door bell suddenly rang. "Oh no" Tom groaned out loud. He reluctantly opened the door and came face to face with his 24 year old chubby sister, Gabby. "Hey squirt, guess who mom and dad hired to look after your scrawny ass while they're away?" Gabby chuckled at Tom's distraught face. "Aw c'mon sis, I'm 18 I don't need a freaken babysitter". He moaned. "It's no that, I'm just here to make sure you stay out of trouble". Gabby winked. She had put on some weight, Tom could tell. Gabby was pretty pale skinned with blonde hair, and was about 250 pounds, with most of the weight down in her enormous behind.

That behind held with it terrible memories of Tom's childhood. He remembered how his sister used to plunk her large posterior on top of him then fart. And her gas was always gnarly, even at a young age. In the present day, Gabby had never lost her habit of constant farting. The farts themselves had only gotten deadlier. Tom recalled the day when he and his friends were playing xbox in the basement, when Gabby came down and released a giant fart in the room before shutting the door on them. When she opened it back up, the boys were gagging and nearly fainting from the stench. Tom shook his head at the mentally-scarring memories. He then took off to this bedroom to go on his computer, and to sadly, cancel the party invites that he had already sent out. Suddenly, he felt faint, and began to fall quickly towards…the seat of his chair?

Tom opened his eyes. He must've blacked out randomly or something, "weird" Tom thought. Suddenly, he was jolted upright when he became aware of his surroundings. He was standing on his desk chair, only he was about 3 inches tall! Tom was flabbergasted, somehow he had unexpectedly shrunk! Before he could do anything else, the ground began to shake. Something huge was on its way! Tom glanced up just in time to see his older sister's spandex literal giant rear-end coming towards him. "GAAHHH!!" the newly-shrunken man screamed as he fell frozen in fear and in a second, was sat on and effectively engulfed in his sister's ass fat. The poor kid had the misfortune of ending up right between Gabby's gargantuan cheeks. "Ah I hope Tom doesn't mind that I'm using his computer" Gabby said aloud, unaware that she had just sat on her aforementioned sibling.

Tom couldn't see a thing, all around him it was pitch black. He struggled to breathe as he felt the intense weight of his sister squeeze him deeper into her buttcrack. Tom retched at the unpleasant stench that filled is environment. He was in his sister's ass! And her spandex alone seemed to reek from ass sweat. "God forbid she release a fart…" Tom thought to himself. As if on cue, however, Gabby leaned a little to the right. "Aw sweet! Freedom!" Tom exclaimed as he prepared to crawl out from his sister's butt. His escape was flawed however as he realized the intent of Gabby's shift in weight. PFFFFFRRRRRTTT!!! "Ah whew" Gabby sighed as she released a mighty fart, unbeknownst on top of her younger brother. In her asscrack, Tom was bombarded with a huge hot gust of gas that pressed him to the seat and burned his face. Tom gagged as he took in the ungodly smell that followed, choking and sputtering at the tainted air. Back up top, Gabby continued to play around on Tom's computer, browsing youtube randomly, playing random flash games, and checking facebook for updates.

All whilst doing this, she periodically farted over and over again, expelling her disgusting gas on the trapped Tom. Tom all the while squirmed for dear life, with every blast of gas he received, he felt a little weaker. Eventually, to his relief, his sister got up. His crushed form, however, was slightly paralyzed due to the numbing effects of being under his heavy sister. To Tom's horror, Gabby slid down her spandex pants, revealing her big, round butt in all its glory. Before he could react, his sister slammed her bare ass back down on the chair (shoving him deep up her crack). Gabby was watching some porn, and she had taken off her pants to masturbate to it. Tom coughed as he inhaled the musky smelly scent of his sister's deep butt crack, her dirty butthole suspended above his face. Suddenly, Gabby squeezed her ass down as she furiously fingered herself, causing her smelly hole to slam down onto Tom's face, rubbing the scent in. After 10 minuets of this, Gabby had an orgasm, but instead of spraying like the average girl, she released a giant fart. Directly in her little bro's face.

Tom's face felt like it was going to rip off as a gale force fart blasted his body. Once he got a whiff of the smell, he had wished that the fart had killed him. Tom kicked and clawed at his older sister's butt as he choked on the revolting gas, arguably the worst he had ever smelled from Gabby. After cooling down for another 10 minuets, Gabby finally lifted herself off the suffering Tom, her butt leaving a large visible imprint on the desk chair. "Heheh..I hope Tom doesn't notice the smell" she giggled as she walked off, leaving Tom to recover agonizingly on the seat.

Tom lay paralyzed (and still shrunken) to his giant desk chair, his arm and legs tingling from being crushed under the colossal weight if his chubby sister, Gabby. As he stared at the ceiling, Tom wouldn't help but wonder if he was dreaming. The smell of funky ass sweat from Gabby's giant butt was still strong and rubbed all over his clothes. Nope, this was defiantly not a dream. Tom sighed as he tried moving his legs but only got little movements out of them. He was going to be there a while. Suddenly, he heard the front door open and a new voice sounded. "Hey Gabs! Ready for the best post-high school slumber party ever?" the voice said."Oh no" Tom thought. He recognized that voice. The thundering foot falls only confirmed his suspicions.

The voice was coming from Gabby's 300 pound friend, Rose, who she knew from her fat acceptance group.  Rose was a bottem-heavy half-Mexican who had pretty tanned skin, but sweated profusely and always stunk up the room.The two girls had know eachother since high school and by the sound of it, wanted to have a slumber party for old times sake. Tom shuddered at the memories he had of Rose. He recalled one time when Rose came over early when he was still asleep, she had crept into his room, pulled down her pants, and farted right in his face. Although he was 15 at the time, he cried like a baby from the humiliation. For whatever reason, it was always Rose who was extra cruel. "Hey wheres your little bro Gab?" Rose asked Gabby. "Probably hiding from you." Gabby giggled. "Remember that one time I used his tooth brush to scrub my ass? Did he ever find out?" Rose laughed. Tom, who heard every word of this confession, was revolted. He remembered he swore he tasted shit on his tooth brush once. "Nah he's pretty dumb" Gabby replied. "I was just on his computer doing a couple of naughty things, including ripping some ass on his precious $175 chair!"

The two girls laughed and made their way back into the room and stared at the computer. Tom desperately fought to push himself up, but his body still disobeyed him and merely twitched. "Hey mind if I use this thing? I'm going to make the little squirt's wall paper gay porn" Rose exclaimed. "Sure that sounds funny, be my guest" Gabby shrugged. Rose strode over to the chair, and hovered her giant butt over it. Little Tom got quite the view, the monstrous sweat-pant clad back side blotting out all light from his perspective. To his disgust, Tom could see clear sweat blotches under the thighs and most notably between Rose's butt cheeks. He desperately screamed as the huge ass came closer and closer to him until….

"SQUELCH!" Tom was again in the most unlucky of positions and had ended up squashed right between the cheeks, only this time of a larger and smellier ass. Heavy, sweat-stained ass fat clad in tight pants smothered his face, the two titanic cheeks squeezing him between them. Sweat dampened his body as he was pushed upward into her butt. The smell was terrible, a combination of the sourness of sweat and the muskiness of ass stink. Tom coughed as he squirmed in his butt-cheek prison, only to have Rose begin to bounce up and down. "Owie I have an itch!" she complained. "Fart. That's how I get rid of mine". Gabby suggested. "Okay! Sounds great!" Rose nodded and clenched up her body. Tom suddenly felt the heavy fat around him tense up. "Oh God noo…!!" Tom screamed as Rose unleashed a giant blast of gas. PSSSTFFTFTFTTTTTTTTTTTTTTTT. Tom was hit hard by a hot, heavy, and wet gas bomb that left him drenched in the smell. It was worse than anything his sister could have come up with. He coughed and retched, his eyes pouring with tears from the onslaught of the stench.

"Oh man Rose that was awful!" Gabby complained, fanning the air around her with her hands. "That was a little one, you know my farts!" Rose said confidently.  Indeed, the two fat friends had gotten more than a few whiffs of each other's nastiest farts when they were younger. Rose's were always the winners though, often even making Gabby collapse from the severe scent. The fart had spread everywhere in the room, dissipating slowly.  Tom yelled once again but no sound would escape his smelly prison. Rose simply ground him deeper and deeper into her stinky abyss "Oh here comes another one!" Rose yelled triumphantly. PSSSSSSSSSOOOOOOOOOORRRRRRRRRT! A low, bassy fart echoed throughout the house, and the room shuddered slightly. Tom's body was blasted violently, his clothes feeling as though they were going to rip from his body. When he caught a whiff of the following smell, Tom felt as though he may have a seizure. His head spun, the gas made him dizzy and nauseous. Breathing through his mouth did not help at all; it simply enabled him to taste the fart. Tom had lost all strength; he could no longer keep his head from sticking to the inside of his unaware-tormentor's buttcrack. His face squished against the sweaty inside-asscheek, the smell over taking his conscious as he slipped out of reality.

"Oh god thats gross!" Gabby complained, holding her nose at her friend's latest bio weapon. "Aw poor baby, just think about all the gas we put your little bro through and imagine how he felt." Rose giggled. "Speaking of which...lets find the twerp and share some of my farts with him!" she added.

Tom sleepily opened his eyes. His nose burned, and the vile taste of his sister’s and her friend’s deadly gas still cursed his taste buds. But the ample asses of his two giant unknowing tormentors were no longer present, so perhaps, he was finally free from their fart torture. Tom’s hopes quickly fleeted however as he realized his current surroundings: he was in a giant jar. Of course, the jar wasn’t giant; rather, he was still shrunken. What chilled his spine more so was how he probably got put into the jar.  The two giantesses who had been unknowingly farting on him horrendously must have discovered him…

“Hey Gabs, your little bro is awake!” Rose’s voiced boomed on the other side of the glass jar. Tom looked behind him and could see the giant Rose looking down at his shrunken form. Gabby excitedly hurried over from the other side of the room and peered down into the jar. “Hey Tom, Rose and I were just having a fart contest on your lovely chair, but when she got up, you were stuck between her butt cheeks” Gabby explained to him. “Yah you smelt terrible dude” Rose laughed. “So, like how the fuck did you shrink?” Gabby asked. “Look, I don’t know, but can you guys help me out here? And why the hell am I in this jar?” Tom asked, annoyed. “Oh don’t worry bro, we will.” Gabby said with feigned sympathy. “As soon as Rose and I finish our fart contest!”

Tom’s eyes opened wide in terror. They were going to continue farting on him even though he had been discovered. This brought his sister’s sadism to an all new high. “Well since he is my brother, I get to go first!” Gabby declared as she started lowering her pants to reveal her chubby bottom. She picked up the jar, causing Tom to stumble around a bit inside his prison, and set it down on the floor. Gabby then squatted down above the opened jar so that the opening was plugged up with her massive butt. Tom stared in horror as his sister’s giant butt hole hovered above his confines. Gabby started counting down .“One….two…three!” PPPFFFFFFFFFFFFRRRRRRRTTTT!! With that, she released a loud, dry, stale fart directly into the jar. The force of the wind blasted Tom to the bottom. The revolting stench of hot, aged fart quickly filled up the small space. Tom retched and gagged as the small jar became a fart sauna, his nostrils aching and his mouth tasting the filthy air.

“Ahahah look at him choke!” Rose laughed as she observed Tom react to the fart Gabby had just dropped on him. “I think he’s overreacting, it wasn’t even that bad!” Gabby added. Tom thought otherwise, his sister stinky butt still plugged the jar so the fart wasn’t going anywhere. He sunk to the floor, looking up at his older sibling’s butthole open once again. PPPPPPSSSSSRRRRRRRRRRRRRRTT!! A wetter sounding fart forcefully blasted down upon Tom, raining little flicks of shit throughout the jar. Gabby giggled at her newest creation, accidentally sending another 3 putrid farts echoing down the jar. Tom buried his face in his shirt but nothing could block out the smell. The air in the jar had become hot and moist with butt stench and stewed farts. Tom was surprised that he was still alive in the near toxic environment. But it was about to get worse…

“My turn!” Rose exclaimed as she playfully pushed Gabby off of the jar. Now clear of his sister’s butt, the pent-up farts within the glass container were released. Tom took mouthfuls of the clean, fresh, fart-free air now circulating the jar. “Don’t get to used to it, little guy!” Rose warned as she began to squat her own nude ass over Tom’s prison. Her butt was much bigger than Gabby’s, and smelt probably 5 times as bad. As Rose’s bbw rear plugged up the jar, the stench of musk and ass strongly filled the area. “Mmmmm here it comes!” Rose warned as she started pushing out the monster that had been brewing inside of her. “Haha uh just don’t kill him Rose” Gabby added nervously. Tom stared up at the giant Mexican girl’s rumbling butt. Something terrible was on its way. There was no where for him to run. With a final gurgle, Rose’s butthole opened up and released an atomic blast of a fart. PFFFFFFFFFFFFFFFFFFFFFFFFFFTTTTTTTTTTTTTTSSSSSSSSSSSSSS!!!!! The shattering explosion threw Tom to the ground, and filled the small jar with intense heat and stench like no other. Had it not been for the farts that he had to endure earlier, Tom would have passed out.

But passing out would have been a blessing, as now he was trapped with Rose’s killer of a fart. Each whiff burned the smell deeper and deeper into his mind. His mouth tasted like he had just eaten a bag of shit. “Ahhh that was a good one!” Rose exclaimed as she patted her giant belly, keeping Tom trapped with her deadly gas. “Damn I’m surprised that jar didn’t explode!” Gabby laughed. “Oh wait….I got more!” Rose smiled. Tom lay paralyzed to the ground of his glass prison, to weak to move. A new, more threatening sort of rumble began to emit from Rose’s flexing butthole. Something worse was on its way. FRRRRRRPHHHSSSSSSSSSSORRRRRRRRTT!!! What started off as a really wet fart quickly turned into a torrent of diarrhea which rained down upon the unsuspecting Tom, quickly burying the young man and continued to fill up the jar. “Ahhhhh” Rose sighed with relief. “Rose!! Get the fuck off of it! Your gonna kill him!” Gabby shouted as the jar was filled all the way to the stop with her best friend’s runny shit.

“Oh crap!” Rose yelped as she leapt off of the jar. Thinking quickly, Gabby grabbed the shit-filled glass and ran with it to the washroom. When she got to the toilet, she hurriedly dumped its contents into the bowl. Scanning the crap-filled toilet for signs of movement, Gabby eventually spotted her brother’s shrunken form scramble to the mucky surface, swimming through the mess. “Are you alright little bro?” Gabby asked with relief as she used a tissue to pluck her brother from the toilet. “You fucking psychopaths, I’m calling the cops on you both when I grow back!” Tom coughed through mouthfuls of shit. “Nope, sorry, cant have that!” Rose suddenly interrupted and snatched Tom from Gabby. “What are you doing?” Gabby asked as Rose held up the shrunken Tom to her face. 

“Were having way to much fun with you little guy…and so am I!” The Mexican giantess giggled as she lowered Tom to her giant butt cheeks. “Wait…no I take it back…please no!” Tom begged as Rose parted her cheeks and began to push him towards her hole. With a small shove, Rose pushed Tom’s entire body head-first into her butthole, leaving only his feet sticking out. Squished into Rose’s smelly pink tailpipe, Tom screamed as a SBD blew into his face at point blank range. The first of many. “I’ll just keep him in there long enough so that he’s learned his lesson!” Rose explained to Gabby. Gabby, although still somewhat concerned for her brother, let Rose do what she wanted with him.

Several weeks passed by with Tom being Rose’s buttplug. By the time he was returned to Gabby, he was a different man. Now submissive, it seemed that the endless farts that he received from Rose had a lasting affect on him. Gabby enjoyed this newfound brother, and happily used him as a crack-massager and a seat cushion. For old times sake, she even sat upon Tom’s old computer desk chair and farted for hours with her brother lying deep within her crack, enduring fart after fart. His sister’s ass was his world now. Sandwiched between the fart-blasted chair and Gabby’s farting butt, he was home.

The end!