Under My Sister's Ass
by SellCon2762

“Dear Diary, it was another normal day at school. By normal I do mean boring. Classes still suck and history class won’t shut up about the War of 1812. They keep emphasizing that it was important to the survival of the country and such, but I’m not worried about a war back then, I’m worried about survival into the next day. At least I have Kyle. He always knows what can help me out; I was feeling down earlier after a couple of girls were laughing at me for still having a teddy bear, like they never had one growing up. Word got around that I still have a stuffed animal, I can only guess as to one reason for that. God what I would do if for just one day she didn’t come home at all….” Sarah wrote down her diary as her wish and hope for the last line of that entry were denied by the loud slamming of the door, it was no secret as to who made that noise.

I could feel the ground around me rattle as my sister’s footfalls got closer and closer to my room. The door opened up and there she stood, nearly dominating the entire doorframe, there was no hiding from Micah. Smile on her face I looked at her body with dread. My sister…my younger sister, is massive. I am cursed with someone with slightly less maturity but double the body weight of my own body. She’s 6’2 and still growing and weighs 180 pounds. She’s a foot taller than me and twice my weight. And she’s two years younger than me.

“Right where I left you!” With her short black hair looking all frayed from a deep workout Micah walked in with her chest wobbling against the constraints of a sweaty grey tank top. I could already smell her, the sweat of my half Mexican-half Croatian sister, built like a brickhouse, a star track and field star, a star wrestler and a star rugby player, she’s tougher than nearly every guy in our school, and she just turned 16 years old.

“Smell this!” And with those words she turned got on top of my bed. I was lying with my back against the back of the bed. She squatted her thick legs over my body and aimed her booty right at my face. She wore what looked like a black thong, it was only when it got closer that I recognized what it was, it was MY shorts. My own black shorts, I was looking for them this morning and my sister had turned them into a black thong, or at least to her considerate backside that’s what they looked like. Shorts that covered my own bottom comfortably were competing with far more plump buttock to the point that they were rendered useless, now scrunched up deep in the cavern of her cavernous butt crack. And then she pressed that butt crack up against my nose. My face turned red as I felt what felt like a hundred pounds of booty flesh press firmly against my face. I could feel the fabric of my former shorts against my nose, they already smelled super funky, a mixture of sweat and gas from my sister’s infamous gaseous outbursts, but as I knew far too well, she saved her real farts for after school.

“Incoming!”

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I could tell that this one had plenty of time to buildup, Micah could fart in school and sometimes did but the smell of one of her classroom farts could drift into the outside hallway. I sometimes heard girls talk about the smells she left in the bathroom and the last janitor to complain to her got the same face fart treatment that I was getting now. I tried with my best to yell and cough from the outburst but the pure brassy explosion of her pent-up fart were louder than anything I could muster up. The fart went on for what must have been an eternity, but was well over 20 seconds in length when all was said and done.

My sister held her body in place as she pressed her gas’s advantage onto my face. I became a vaporal toilet to her, taking in all of her gas and breathing it through my lungs. I could already determine what she had eaten for lunch with this, chicken, baked beans and broccoli with cheese. I was cheating here since I saw her load up her lunch this morning before school began. She wanted a meal high in fiber and protein. She threw in a protein shake into the mix and all of that inside her stomach created a sinister aroma that was not for the faint of heart to breathe in. Right now my lungs were burning as I desperately tried to breathe in the nasty stench of her fart.

“Ha! I’ve been holding that in for hours!” Micah laughed as moved her ass away from my face. I was in tears, red in my face as I was in a temporary moment of shock from the overwhelming aroma in my body. I could smell the cheese and broccoli more than anything else. Micah loved broccoli, she loved beans, she loved protein and she loved sharing its aftermath with those around her. It helped her gain more strength but it also helped her extend her control over me.

“Why?” I wined, rather pathetically I must admit as Micah laughed more. She ripped another deep fart, only twice as long as the previous one.

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“Why? Because I have to fart! That’s why!” Her laughter was stronger. She outgained me in height back when she was ten years old and her advantage over me has only widened since then. My sister originally thought that farting in my face was just some funny thing she could do with me, but then she realized that she could use it to basically get her way. She dominated me, she owned me, she may have been my younger sister but she was my flatulent master. I was sick over Thanksgiving weekend last year after she had eaten a very large meal and wrestled with me, I was very lucky not to go to the hospital after that. In short, my sister is my large fart bully. The evening was only just beginning however, the smell of her farts hung over my room like an unwanted guest, lofting around until it was just clear enough to be considered nice-smelling, and that was when she ratchet up another fart. My sister was full of them, on a regular basis she could fart as much as she wanted.

Micah walked over toward her bedroom, which had actually become the master bedroom. My parents, realizing that she needed a lot more space them even them had moved over to her old bedroom and they actually were able to fit there relatively comfortable. My younger sister’s size was something that baffled them as they weren’t incredibly big themselves. Dad was only 5’8 and mom a couple of inches shorter than him. Everyone was practically children compared to my younger sister’s increasing mass. Standing at her height dad was staring just below the top of her increasingly growing C cup breasts. They weren’t the most eye-popping set of whoppers out there but on her body they still stood out, and they were nearly twice the size of my own…ughh. My sister was working on her weight set, training her already strong body to become even stronger. It wasn’t more than a few minutes into her workout as I tried to start a little of this evening’s homework when I heard the rumbling sound.

The wall behind me, which was naturally connected to the master bedroom, had shaken as if there were a giant cell phone attracted to it on maximum vibrate mode. I counted the seconds that this vibration lasted, I got worried as I counted further and further up, this stuff shouldn’t be lasting multiple seconds, but the things that came out of my sister’s ass were notorious for lasting long. I finally heard the vibrating die down after 20 seconds. Oh God what the smell in her room must have been like, working out and farting up a storm, Micah could do no worse in producing such a destructive aroma and it didn’t take long for me not to notice it. Not that the smell for her previous outburst had gone away but this latest fart of her’s easily overtook with a vile aroma. My best guess as to describing the noxicity of the stench was a mixing up of garbage and skunk musk, and the garbage consisting of leftover food and vegetables roasting in the warm humid Canadian autumn. They helped to produce a massive wave of stink that swept through the house like wildfire. Nothing was immune to the gaseous outbursts that left Micah’s rear. We could be blessed on extremely rare occasions when the smell of her farts did not leave her bedroom but that was a 1 in 100 chance at best, her farts were really that strong!

“Sarah! Come in here now!” Micah’s voice was the only thing stronger than that fart. Loud and menacing, when she commanded you to her room you were ill-advised to ignore it. If I did, she walk back into my room and wave around that stink in here and use my bedroom items as props to mark her territory, not that she didn’t do that anyway. I begrudgingly got up from my room, mopping the whole way as the smell of her already dastardly deed grew fouler with each pace closer to her bedroom. Despite the door being shut the smell was nearly puke-inducing, and then I opened up the room to her bedroom and nearly was overcome with nausea. Only my ironically strong stomach prevented me from spewing chunks on the floor as a heatwave of ass gas blasted me in my face.

My eyes watered up and I briefly lost disorientation as I heard more of Micah’s weights clinging. She was facing me as she laughed her ass off, whiffing up the air around her. The room was rancid, hot and nasty-smelling. It was like being inside a rainforest with the exception of the rotten egg smelling aroma of the room. The smell continued to get smellier as I got closer to my sister, who was giving that devilish smile at me. There was a thickness to the potent air around her, this was not the kind of stuff that people could get used to easily, even I was blown away by its rancidness and I was “used” to it. Still, I hated having to be summoned in here like this. It was still a better alternative to my bedroom smelling like this.

Micah got up off of her bench as she began towering over my body. Smiling even more she fanned the air around her and remarked again about how nasty the gas was stinking.

“That was particularly bad, what do you think?”

“It’s bad.”

“Bad? You don’t like you sister’s farts?” She moved even closer, I could feel the size difference between us. I was trapped, even if I left for the door I would never make it.

“Well…I mean…I mean it’s not that bad?”

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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaarrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrpppppppppppppppppppppppppppppppppp!!!!!!

Micah belted out an even wetter and stinkier fart, filling the room with a brass-like authoritarian sound that was what made her farts the power that they were. I had to stand there and breathe it in and this stuff was not healthy to inhale. One fart might have been overwhelming but multiple farts like this were torture to smell. This was an industrial amount of brimstone spewing through what used to be my own pair of shorts, burning and taking up microscopic pieces of shit from deep in her asscrack. What officially left the confines of her ass was something that made you sick. I had to keep up my body reflexes from throwing up as she ripped this massive fart. It went on and on and you could tell that she was still packing more gas in her tummy. She didn’t look empty which was the worst part of witnessing such a foul eruption of gassiness.

“Now THAT’S bad!” Micah laughed as she finished up her fart and snickered as the aroma grew twice as nasty as it had been in the past second, and then it stunk even worse. There was no way that the smell could get worse but Micah was a nasty farter, this was all too easy for her, my younger and larger sister made farting ridiculously easy. But that wasn’t even the beginning of her torment, seeing me stand there frightened by the power of her last fart she saw an opening. She picked me up with a hand under each of my armpits. It was so sudden that I found my vision going all over the place as slammed my body against her bed. It was a soft landing but the effect was an effective as always. She body slammed my body against her bed and got up on the bed, once I felt the mattress give way to her larger mass I knew where this was going, I was about to get an up close and personal tour of her volatile rear.

The weight of Micah’s ass on my face was extraordinary. Twice my weight is quite a bit to be pushed up against my head; I’m surprised she didn’t squash it. I could instantly smell the magnified aroma of my sister’s ass and it was a doozy of an aroma. The strongest bit of the smell was that of pure crap, her farts at their closest were a smell that resembled a bowel movement. Toped on that was the smell of girl sweat, which was its own particularly rancid brand of nastiness. And there was the feeling of the two mounds of buttock flesh that formed my younger sister’s backside. This thing was much bigger up close than it was just looking at it from a few feet behind her. Each cheek was the size of my head and my nose was pushed up deep into the folds of what used to be my shorts. She had made them her’s now, underwear and particularly tight underwear, my sister’s ass ate my shorts like a fat kid eats candy.

“Whoa boy! Incoming!” And with that shout from my sister I felt an explosion of my face. On the outside it probably sounded something like this.

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rrmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmpppppppppppppppppppppppppppppppp
pppppppppppppppttttttttttttttttttttttttttttttttttttttttttttttttttt!!!!!

My mind, my body in fact, was shut down due to the immense force of this fart. This was a bomb being detonated on top of my face, her farts were always particularly bad but big farts like this on my face were in a different league by themselves. My ears were ringing and my nose was burning profoundly as this fart was simply unreal to believe. This one was a roaring, bubbling, greasy sound that was erupting from inside her, causing her ass to jiggle visibly and my head to rock with my face being caught in a vice of her wrestling-trained buttocks. The fart shook the bed around me and encircled my entire world. I began to cough loudly as I tried to breathe in the fart, even if it was something I was used to I was never entirely used to it. My immunity was preventing me from passing out to this ghastly odor that had come out from her butt, but I was kind of wishing that I was, the odor reeked of onions and beans and cheese, all now reoccurring parts of Micah’s diet. I could detect all sorts of foods swirling in her stomach as she continued to unload her gas in such a force that scared me. The more my sister was growing up the worse these things were getting. At one point her farting was a passing curiosity but they had become toxic menaces of themselves. The raucous air blew throughout the entire room and filled the insides of my body with a brown haze of pure funk. As her monstrous fart briefly ebbed down to a mummer in sound I could barely hear Micah giggling to what she was doing, the fart had completely stunk up her entire room and the main part of her gas hadn’t even arrived yet.

It was some 15 seconds into the fart and the bubbling returned as I felt Micah clinch her ass muscles to regain her composure and finish out her titanic blast of flatulence onto my face. The vice-like approach to her ass clinching had given me a headache as she pressed forth on her farting. The retching smell of beans and cheese and whatever else had entered her body filled my mind as she turned it up on her farting, producing a smell so horrible that even she had to be surprised beyond belief. As for me, the predominate methane and hydrogen sulfide would always provide an ambience of stink for all to smell. This fart was gaining strength and was more than strong enough to blow the individual hairs on my face and it even blew my hair on the top of my head like a fan. It was great that my parents weren’t home yet, but even if they were they wouldn’t even come close to my sister’s room as she dropped this behemoth of a fart on my face. As far as I had known Micah, this was one of her worst farts, and I was taking it at such a close location and with such concentration that I was suffering dearly under the intense conditions of this fart. Some 30 seconds had passed since Micah had begun ripping her powerful beaner blaster and she was finally willing to turn off the gas valve and finish up the fart.

“Man that felt great, didn’t it fart smeller!” Micah laughed as she rubbed her ass over my face, her giant fart was over but the smell was stuck in my head, I had nothing else to breathe as I got lightheaded, just the sheer weight of her ass on my face was torture but breathing this in was different. I heard more laughter as she finally got her fat ass of my face. In a moment of irony the influx of “less smelly” air into my body had caused a bad reaction and knocked me out briefly as I had become used to smelling my sister’s foul emissions. I was probably out for 15 minutes, but it was just enough for my sister to do something else terrible.

“Sarah!” I heard her yell as I woke up, the smell of her latest fart was still terribly strong in the bedroom. I got up and saw that she wasn’t in her bedroom, but she was nearby. I heard her yell again and I nimbly got off of her bed, with my head still aching from such a sulfuric influx into my body. I could breathe her gas, each and every step, she was imprinting me with her gas, it was how dominance was reached.

“Sarah! Bathroom! Now!” She yelled with authority as I began dreading what she was yelling about. She had just taken a crap and knowing her it was a massive one.

The bathroom reeked of my sister’s bowels. When she took a big crap, she took a big crap. She never did anything small when it came to dropping the kids off at the pool. I would sometimes hear horror stories from school of my sister leaving massive deposits for the janitors to clean up later. The smell from some of her bigger shits would waft around the hallway nearest the scene of her latest crime. Bathrooms had been known to be left abandoned for an hour after my sister was finished with them. And she did these every day in our own bathroom.

While it was your standard, normal bathroom my younger sister had turned it into a war zone. A light tannish-colour haze filled the room with a putrid aroma that bordered on choking. After a while the smell of her farts and her dumps smelled the same but that didn’t mean I had to like it. But it was inside the toilet bowl that looked like hell now. Brown logs of shit were mushed together into a gigantic pile. Imagine a toilet bowl and imagine it filled four/fifths with nothing but shit. This was my sister clogging the toilet, like she did every day. Toilets were just not designed that well to handle her impeccable loads. Everything my sister ate, her high-fiber diet, helped her produce a load of stinky crap that resembled small mountain inside of the toilet.

“Come here; take a whiff of what your sis has created!” She then grabs me by my hair and pushes me toward the toilet. She forces me down on my knees, her tremendous weight and muscles make it impossible for me to prevent her from her actions. On my knees she bends my head over into the toilet and I find myself mere centimetres away from her mountain of shit. I breathe it in, each breathful is painful, my body is wheezing as I try to take in the extra pungent smelling shit. The usual rotten eggs aroma would probably be close to describing what her shit smelled like, only on a much higher level. It was actually twice as bad as her fart and that’s when I heard her stomach growl even more, did my sister ever run out of gas?

“Ooohhh….I’ve got more.” She said snickering as she moved my head around, turning it around inside the toilet bowl so that the back of my head was now touching up against her nasty bowel movement. My face was looking up and I watched as she quickly hiked down her “panties” and smashed her giant and nasty ass up against my face. I could now feel the leftover crap that she had not cleaned up yet. I could feel it within her; she was conjuring up yet another fart.

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This was one of those ripper farts and my mouth was opened at the wrong time as she pushed this wet and wicked fart over my face. I was in hell; there was no way that one could fully appreciate the toxicity of what she was doing to me. The loud and thunderous fart, as powerful as her past explosion and even as bad as the other farts had released powerful butt fumes into my body, not that I could afford it anymore. Trapped between a mountain of her rotten shit and her gigantic farting ass I was immobilized by my sister’s dominating rear. The forceful eruption of gas created a gale-force wind that blew my face to the point that I thought it was just going to melt away. Hot and aridic fumes were leaving an impression on my face as I witnessed nothing but my sister’s nude asscrack. Anyone else but the two of us in this room would have been knocked out by the tremendous amounts of deadly gas that the fart had produced. This rancorous powerhouse kept on ripping out of her anus as I felt the insides of her butt get deeper and wetter. The thick fart sounded like a whole lot of bubbles being produced within a swamp and with the swamp gas intact. The overwhelming odor of beans, eggs and milk continued to flow its way out of her ass as Micah kept her ass pressed onto my face while this eruption continued, she just held it there and as the fart continued to roar on I noticed that she wasn’t moving it. The air around me was becoming fouler by the passing second as the smell just continued to compound against each other.

And then I felt it, the wetness came back, juices were running out of my sister’s ass as she was suddenly realizing that she had not completely finished out her crap. My heart raced, I did not want her to unload another one of her hefty-sized logs right on my face. To my complete surprise she had only sharted, with watery crap running into my mouth and nose, but no solid material, considering the leviathan-sized deposit behind my head in the toilet I had hoped that she was done taking a crap. The shart continued for another few seconds, a wet and disgusting fart on a caliber that would take forever to properly describe, there was nothing good to describe the awesome power of what my sister had done to my face. When she finally took her ass off my face, waving the back of it as she breathed in with great pride the smell of her mess she smiled down on me. She laughed, having used my face once more as a part of her toilet experience. I was whimpering down there, dazed and confused from the aftermath of everything, no one’s body was meant to handle such a back load, especially from her rear like this. She laughed her ass off some more before ordering me to clean her toilet. And I do mean order.

“Clean up my toilet, or I’ll fart on you so bad you won’t wake up for a week!” And to prove her point she dropped another bomb, right there at that moment in the already stinky bathroom.

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25 seconds worth of continuous wet fart sent a terrible message to me, she still meant business. She had more gas cooked up, more than I could possibly imagine, cleaning her toilet was the better option than having to deal with the nasty gases being produced within her. The bathroom shook and the air hummed with the smell of her flatulence, she was farting up to a high impeccable level this afternoon and I was getting the front row seats to it. Slamming the door, almost breaking it to trap me inside the bathroom I slowly moved my head out of the toilet. I had to wash off the residual crap in my hair first, clean myself up before I look back at the mountain of shit. A small indention had been made in the pile from where my head had been resting. After all of that I had to clean up my sister’s dump.

She never flushed the toilet, that was the power of Micah, she did not have to. Other people cleaned up after her, me most of all. I often liked it when she used porta-pottys and outhouses since no one was obligated to clean it up anyway, at least not for a while. But back home, in the toilet, everyone cleaned up her messes. I cleaned it up most of the time but even our parents had been in here scrubbing the toilet and plunging her vile messes from time to time. It was times like these I wished that I was hanging out with my boyfriend just so I wouldn’t have to deal with this. How my sister produced this kind of load on a regular basis baffled me, girls should not be able to do things like these, my sister most of all. Her Thanksgiving-sized dumps were practically historic by themselves; we would not be able to get the smell out of our minds until the end of October.

It took a half an hour but I was able to clear out that toilet of her waste. I had to wash my hands for several minutes just to get everything off of them, even wearing gloves I still felt nasty cleaning out her large dump. But Micah’s reign of terror was still ongoing. I walked back to her room to see her gone but the sound of another loud fart directed me straight into my bedroom where Micah was sitting there on my bed. The air temperature had gone up; it had to be well over 30 degrees in there as she sat on my bed wearing only a stained white bra and those same shorts of mine. I nearly gagged at the smell of her body odor and dirty, sweaty, unclean ass while on my bed, which radiated its musky scent through her short shorts. She leaned over and revealed underneath her ass my beloved teddy bear.

PPPPPPPPPPPPPPPPPPPPPhhhhhhhhhhhhhhhhhhhhhhhhhhhhooooooooooooooooooooorrrrrrrrrrrrrrrrrrrrrrr
pppppppppppppppppppppppppppppppppppppppppppppppppppppprrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrttttttttttttttttttttttttttttttttttttttttttttttttt!!!!!!

Right on top of my bed, Micah farts her biggest fart yet. Such an intolerable blast of foul butt wind and directed straight at my bear. I was nearly in tears when I saw her smiling at me as she grunted; it took a lot of energy to have her release this fart over the bear. From beneath my sister’s ass came out a terrifying eruption of flatulence of such behemoth-ness that it was jarring to see. My bed shook and my room trembled with an eruption that was as powerful as anything she had released to this point. What the hell did Micah have that made her have farts like this? It was a bit strange to feel the power of this fart come out at such a force, blowing out of her shorts and flat on top of my teddy for the duration that this incredible hot burst of foul wind came out. My bear might have been inanimate but I felt truly bad for it, no one should endure such a violent release. The stench had permeated the walls of my room and filled most of the house with her wicked gas. The sound was incredible, a sheer monstrous eruption of noise that crossed the 60 decibel threshold easily. I was afraid that she would tear up the stuffing in my bear with such a gigantic fart. The vibrations of the fart produced a beefy blast of butt gas that was so powerful I could feel it in my body.

“Whew! That felt great, such a nice fart!” Micah, after farting for what as at least 30 seconds settled her ass back on top of my bear and moved her butt several times, grinding the bear’s fur with her dirty and rancid ass even more. And to add to the insult I saw her pick up a glass of a brown liquid on my desk, she took it and chugged the entire mixture down. It didn’t take much for me to realize that it was a protein shake of hers. God my sister loved those things but what they did to her gut was insane, and that was not including what she was doing now. The room stunk of shitty ass gas; there was no difference from what the inside of the toilet smelled like and what my room smelled like. Releasing a burp that lasted for a few seconds Micah looked back at me and started laughing up a storm. I could do nothing but be horrified at such despicable behavior.

That was Micah, constantly pressing her advantage over me. It was the nightmare of my life, my younger sister growing bigger and bigger and looming over me ever more. I couldn’t escape her; she was involved in everything that was in this house. Even at school, I was Micah’s sister, her little sister, even if I was about to graduate and she still had another couple of years to go. And now smoldering inside of her gut that protein shake was about to make quick work of her gastric systems, not that it needed any work. She finally pulled the bear out from underneath her fat ass and threw him at me. She ordered me to smell it. I took the bear and started to inhale it. I was breaking down into tears. The high sulfuric potency of the gas did produce a natural eye watering effect with me, but seeing her do this to my favorite stuffed bear was also heartbreaking. Imagine someone farting on your favorite pet and you could see how it felt for me. The bear didn’t deserve this. Yet it stunk, it was hot and eggy-smelling, Micah’s gas was never a pleasant thing to breathe in.

And then she felt it, it gurgled inside her stomach; she suddenly looked at me with those big sneaky eyes of hers. She was feeling it, inside of her some rather powerful gas was forming and my heart started pounding. She got up and picked me up and threw me down on the bed, it was some wrestling move of hers, also mainly due to her being twice my size. I was lying on my back, on my own bed when I saw her ass descend upon me again, when was this every going to end? That thing was freaking massive from what I was looking at, my shorts had been rendered a thong by her overdeveloped rear. My sister loved doing squats and I could see what that kind of workout did to her buns. Most of it was just pure jealousy, that she would be blessed with such a bubbly butt while I was stuck with a rather flat rear. It was just another thing that she had over me. But there was no time for me to dwell on that. She pushed out another fart and there was a sudden shift in the power of the gas.

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PPPPPPPPPPPPPPPffffffffffffffffffffffffffrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrpppppppppppppppppppp
pppppppppppppppprrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrtttttttttttttttttttttttttttttttttttttttttttttttt!!!!!

Something was happening inside of my sister, right then and there, the sound of this fart, the smell, the sheer aura of it; it was all much worse than before. Not just worse, much, much, much worse, my sister was farting at a newfound level that was astonishing for even her. My sister had let loose a booming noise which rattled the walls and shook a little of the floor, to say it was uncharacteristic of her normal farts was an understatement. Out of her thong-like pair of my shorts bellow after billow of gas blew out with waves of her pungent gas began to flowing out and filling up the room. My head was trapped underneath it all, but somehow I knew the room was smoldering in her rancidness. But it wasn’t the sound of the fart that blew me away; it was the putridness of the smell. Even she was caught up by the ghastly stench of the rotten egg gas, gagging a bit as she made a brief comment about how rancid the aroma was. The gas came out feeling very heavy to her, if that was much of quantification. It was still in vapor form but she was pushing loose a batch of wet eggy gas that should have allowed me to pass out for hours on end. She was pushing out an incredibly dense, humid and poisonous fog, and this was a loud fart. The fart had gone on for nearly 30 seconds and created huge columns of brown gas that blinded me for a moment as I was a little frightened as she had never seen a girl do something like this never seen a sight like this before. Above me Micah was laughing her ass off as she waved her hand behind her butt to spread more of her toxic gas around. I could feel the wind currents of her hand fanning the fumes of her fart. As far as she was concerned, this was her best fart ever and I, unfortunately, had front row seats to it.

“Smell it! Smell my butt!” Micah cried out as the smell compounded upon itself. It grew sicker and sicker by the second, I couldn’t believe just how nasty it was and that was by lofty standards I can assure you. I tried moving my head around underneath her giant rear but to no avail. I was getting little bits of oxygen but cracks between her ass and my bed but that didn’t help too much for me. I was smelling a bomb so soon after detonation; I smelled a super-intense version of sulfur.

“That’s right fart sniffer, sniff it! Keep your nose there or I’ll break every bone in your body.” She said laughing as I kept my nose forced in there, the threat of her destruction of my body was real, but the foul aroma of her ass was even realer. I could do nothing but smell her titanic rear and sniff hard to get the puke-inducing feminine aroma of her. I couldn't and so she moved her ass a little more closely to my face and I could now smell hell from her ass crack. They say that hell smells like brimstone, I didn’t have to die to experience it, I was at this moment. Fire and brimstone, Micah’s ass was releasing this on all cylinders. I closed my eyes and inhaled deep. The hot and pungent smell of her divine femininity filled my nostrils to my lungs. This was the smell of dominance, more than anything it was dominance. Each day and every day Micah could do this if she wanted and she knew that I could do nothing but take it in.

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Three more farts erupted out of her ass; they were all as strong and toxic as that first one. Smelling something as deep and powerful as this was not for anyone to experience. You wouldn’t want to wish this upon your worst enemies. I yell, I complain, I bitch, there’s nothing I can do, the threat of Micah was real enough to keep my face there even though I could remove it. It was psychological; it was the end result of one’s younger sister establishing pure dominance over her older sister. On a day that I could be doing anything, hanging out with my boyfriend or watching a movie with friends or even doing homework, I was sniffing my younger sister’s farts. And these first three farts were the first of several to come out of her ass, when the urge to fart came to her, she capitalized on it. It didn’t matter one iota whether or not others might smell it around her she was going to fart. And why not, who was going to challenge her, there was nearly not a single soul in school who could properly stand up to her. She was massive, she was woman and she was stinky, or so stinky.

If the first fart smelled like something deadly then these next three farts were even more graduated in terms of killer. The smell was ridiculous; it was something from a nightmare. Smelling one of these in the same room as her was one matter, you feared for any small animal hovering around her rear when she did so. But up close and personal and it was an entirely different matter. I could feel a blinding heat rush over my nose and across my eyes, obscured by the mounds of butt flesh that she so generously possessed. My ears were ringing again with the thundery sound of fart being cut. You’ve heard people fart on the internet in silly videos before; my sister blew them all away, literally. She could fart with such incredible depth in noise that it was impossible to believe. But I heard it every day, a symphony of gastric bombs being released one after another and more times than not by face was way too close to comfort. I could call my sister’s bluff and leave the room and run away but then she would simply seek out my boyfriend and fart on him to death, she did so already. She had warned me, if I didn’t sniff her farts, someone else would and she would not be responsible for how they handled it.

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MICAH CONTINUED TO FART, BIGGER, LONGER AND SMELLIER! She used her hands to expand her asscheeks and shove my head even deeper into the folds of her ass. It wasn’t even a question anymore of whether or not I could escape; my nose was trapped, bordered by almost 15 pounds each of hard pressed buttock. Her glutes were monuments to power and now my nose was being pressed, the cartilage fused together by the rock-hard mounds that my sister called her ass. And with my nose thusly trapped leaving her ass would mean ripping my nose off. All of that considered though it might have been a better alternative. A biochemical process was taking place deep in her bowels as her next three farts were even worse than the last wave of farts. She was farting so bad that I almost expected to cause my head to explode just from the sheer dynamite-like explosive power of her fart.

And then she laughed, she was farting up a storm and laughing about my current predicament. This was the story of my life, catching myself buried deep within the folds of her dangerous ass as she blasted more and more of her putrid gas. With that latest protein shake digesting itself in her she was creating all sorts of smells for me to endure. But more than anything else, it was adding on to her mass, she was going to be getting stronger and even bigger. I hope it wasn’t the case but I’ve been downwind from too much of her to hope for the best. I almost enjoy school much more than home since I can’t be bullied by her as much there, but even then she dominates everything she’s in. After a while of having her fart in my face there was a sudden stop in the farts. I smelled noxious air all around me, the shitty folds of my sister’s raunchy ass held my face tight and I was doing nothing but breathing it in. I then started to hear it, a titanic grumbling was taking place within her stomach and with that she began snickering. Not just a normal snicker, this was devious. She was almost sorry for what she was about to do.

“I need your nose in deep and tight in there. This one’s gonna be bad!” Micah laughed some more as I feared for my upcoming predicament. Every other fart before this one was going to be child’s play compared to what I was about to witness. Now hearing about the War of 1812 in class didn’t seem so bad.