Being in your own thoughts, you failed to notice the eclipsing shadow looming above as you sat on the bench. With a confused expression, you looked above as you were greeted by the all too familiar sight of your sister's unfathomably massive rear end hovering above. Wide enough to easily claim the entirety of the bench, you stared in awe as every slight shift she made caused her blubbery booty to wobble and ripple in a cartoonishly exaggerated way.
Dressed in a white, long-sleeved shirt and a daringly short mini-skirt, you could only assume she was wearing a pair of panties beneath, however whatever trace of it existed had been burried beneath the unending waves of buttmeat.
With a drawn out sigh, Claire began to bend her knees as she prepared to seat her rear onto the bench, the noxious stench which had been built up by months and months without showering, and it was no secret she stopped her futile attempts at using toilet paper after her booty grew too large a few years ago.
Once Claire was hovering just a few inches above the bench, you quickly realized you were seated in perfect alignment with her unwashed crevice. And as if on queue, Claire moved her hands behind her back and took a generous grasp of each cheek, and pulled them apart, exposing the unending depth of her fartcrack until you could see a feint white and brown line being relentlessly wedged so tight against her asshole, you swear you could see a feint outline of it.
Though, you had no time to admire the unyielding endurance of Claire's thong as you heard a terrifyingly inhuman gurgle roaring through her jiggling gut as you saw her plump farthole punch and thrash against her skimpy panties in a pulsating manner, beating the fabric senseless for having the audacity to impede the inevitable booty blast.
"Gawd, can't believe it took 7 breakfast burritoes before I realized it wasn't the lactose free kind." Chloe groaned as her pucker continued to jolt and thrash against the defenseless thong. Before a solid stream of brown gunk trailed down her already filthy pucker, until it expanded further and burst wide open, letting a torrent of liquid diarrhea along with a barrage of wet farts burst out and absolutely drench the last remaining white parts of her panties, as well as a generous portion of the bench.
You always knew Chloe's unrivaled levels of filth, which was always heavily amplified by spicy food, but you could never prepare as you stared deep into her crevice and were assaulted by a surge of her chunky booty soup. Though, with little to no time to fully assess the situation. Chloe just let out a relieved cackle. "Well, at least noone was around to hear that one." And proceeded to plant her massive rear onto her baby brother, fully encasing you within her buttmeat.
With your older sister's flesh restraining you from any form of movement, you felt a quick jolt as Chloe's buttmeat clenched briefly, followed by a slight growl escaping her mouth. "Urgh, why does my asshole always itch when I fart?" And with that, you barely had time to brace for impact as she rammed her sausage-like index finger into her asscrack and scooped you up, launching you along into the very depths of her slimey, shitcaked buttcrack until you struck the brick-wall of her clenched pucker. A series of ecstatic groans and gasps escaped her maw as she smeared your face straight against her swollen pucker, skillfully maneuvering you around her pathetically skimpy thong.
Now completely wedged between the excessively taut thong and her continuously pulsating butthole, you could barely crane your neck to witness her finger disappearing from her crack, only for Chloe to give her thong a gentle tug, squeezing you firmly against her shithole, as another gurgle roared through her belly as she flexed her glutes. With a gulp, you tried to brace for impact, but your limbs were completely imobile and glued to your sides as her creamed pucker started to twitch, relentlessly punching your helpless face into the taut fabric of her thong before a grotesquely slimey fart splurted through the cracks.
Chloe let out another ecstatic howl as she turned her head to look at her monstrous booty, with a dumbfounded open grin, she gave each of her fat cheeks a rough smack.
"Golly, why does my thong feel sooo good against my asshole all of a sudden?" She grunted and used her hands to knead the doughy buttmeat, grinding both you and her thong firmly against her slimey hole. "Hngh, never, ever going to remove my thong if it keeps this up." She chuckled as she made an audible smack with her wet lips. "Hear that? I was gonna throw you out, but I guess you could relive your last few weeks as nothing more than a toy for my asshole." She laughed whilst grabbing the back of her underwear beneath her skirt, yanking on it roughly to ram the knot in her thong against her blubbery farthole, unknowingly smearing her baby brother against the shitsoaked, flexing muscle, while simultaneously looking around to make sure noone saw her speaking to her underwear.
1. Cushion to a Farthole.
The bus eventually arrives and Chloe quickly enters it as she makes her way to school. Looks like you'll be spending your day pleasuring your older sister's asshole while enduring the unspeakable substances she harbors in her buttcrack.
It doesn't help that the bus is nearing the end of it's lifespan, as the heater is stuck on the hottest option, while the windows are unable to open. Due to the excessive weight the bus has to carry each day, the suspension is completely busted, resulting in every slight bump in the road essentially tossing it's passengers in their seats. At least it's just a 30 minute ride on gravel and dirt roads.
2. Butthole Slip-n-Slide.
When the bus arrives, it breaks down, with the chaffeur sighing in frustration and the engine splurting out more smoke than Chloe's butthole. Your sister realizes that the only way for her to arrive at school in time is to jog there, and Chloe is well known from expelling gallons of sweat from the slightest exertion.
3. Fartboy Unchained.
As Chloe stands up, she releases a potent fart which frees you from the chains of her thong and hurls you back onto the bench. Leaving you stranded as your sister boards the bus.
4. Launch in T-Now.
Chloe's fart was more powerful than anticipated, and her angle caused you to rocket out through her jiggling buttcrack as you were sent soaring into an unknown destination, far too fast to comprehend your surroundings in the meantime.
5. Friendly Exchange.
As Chloe looked around, she was shocked to see your neighbour, and one of her closest friends Yasmine staring intensively at her, having heard everything. Yasmine was an african girl the same age as your sister, though with a whole head and a half taller, and a monstrous ghetto booty which put Chloe's to shame. You've actually been crushing hard on her for the past few years, mostly because Yasmine is the only girl you know who's actually nastier than your sister, while also being completely carefree and open about her various stenches, she never cared where she was, or who she's around, if she has explosive flatulence, she'll unleash it wherever she pleases.
And what's absurd is that she's probably the least filthy of her family.
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