Movie Night
by Eproctophile

Megan lay on the couch watching her favorite Sis-Sis film and munching on popcorn. Twenty, a 140 pounds, and a coach potato if ever there was one, she enjoyed this relaxing time.

In pranced Tess, her eighteen-year-old sister, wearing a pink sweather and jeans, and weighing 125 pounds. “Oh, you’re watching Sister Brawl,” she said.

“Yes, this is the part I love the—“ Megan started to say, but her words were cut short as Tess plopped her butt in Megan’s face.

“One second, something big is coming,” Tess said, grinding her petite ass over Megan’s nose and lips. Then a huge fart erupted.

Ppppppppppppppfffffffffffffffffffaaaaaaaaaaaaaabbbbbbbbbbbbbbb

For Megan it was horrendous. Megan had been intent on relaxing, but having her sister’s sweat-filled posterior in her face, releasing noxious gasses was pretty much the opposite of relaxation.

Another one came

Ssssssssssssssssssfffffffffffffffffffffffttttttttttttttttt

After a third really potent fart, Tess hopped off, grinned down at her sister, and started to lower her butt again toward that lovely face she enjoyed sittiing on.

“Why not go fart on Steve?” Megan asked. “He’s got to be more fun to do this to than me.”

“He’s out with Lucille. But don’t worry, I have a special reward for him when he comes home. He’s gonna be my perma-butt slave.”

Nnnnnnnnnnnnnnnppppppppppppppmmmmmmmmmmmmmmmaaaaggggggghhhhhuuuunnnnnnnnnnnnnnnfffffffff

“Ewwwwwwwwwwwwwwww! Why are you farting on me if you need to save some for him?”

“You’re practice, big sis. And anyway, girls do it to their sisters in all the movies you love. So why don’t you like me doing it to you?”

“Because real life isn’t a movie!”

Tess slammed her ass down on Megan’s face, grinding hard. “You shut your lip! Your fart-splattered, butt slave of a lip.”

She then spotted Megan’s carton of popcorn on the coffee table. Placing her butt over the top, she farted profusely. Then she ordered Megan to stick her hand in there, yank out some popcorn and stuff it in her mouth.

“No way! I’m not doing it!”

“Then I shall release more horrendous farts up your nostrils, and in your eyes, too.”

“No, not in my eyes!” Megan said. Tess hastily shoved her butt-cheeks over them.

Jjjjjjjjjjjjjjjjjjjjjjjssssssssssssssssssssssssssnnnnnnnnnnnnnfffffffffffffffrrrrrrrrrrrrrrrrrrrrrrr

“Ugh! I’ll do it, I’ll eat the popcorn! Just please spare me.”

Tess leapt off, and Megan looked gloomily at the popcorn. She took a handful. Brought it close to her lips. Tess guided Megan’s hand so she was forced to sniff her sister’s fart splayed across the popcorn. Then Tess danced a step away, to watch Megan move it toward her mouth.

Megan tossed it at the wall. “Forget it! I’m not swallowing that.”

Tess was peeved. She pounced on Megan, pressed her knees to Megan’s throat, her rear end on Megan’s breasts.

“I will never let you leave this house again without your boobs smelling like my ass. You’ve made me so angry…”

Sssssssssssssssssssssssssssnnnnnnnnnnnnnnnnnnnnnnnaaaaaaaaaaaaaaaarrrrrrrrrrrrrrffffffffffffffffff
iiiiiiiiiiiiiiinnnnnnnnnnnnnnnnnpppppppppppppppppp

“Eww, stop it!” Megan said, wanting to push her sister off, but given the position she was in, she could not.

Tess snatched the popcorn carton and forced Megan’s mouth open, then began dumping the fart-splashed popcorn into it. Megan couldn’t move her head due to Tess’ knees pressed against her neck, nor spit the nasty popcorn out. She was forced to chew it to breathe.And the air all reeked of Tess’ flatulence anyway.

“Buttschooled,” Tess said, laughing. This was not a friendly laugh. It was an “I conquered you” laugh. And though Megan did watch movies where sisters did this, she had never expected Tess would do it to her…

Tess tossed away the carton when she knew Megan could take no more, but she continued to fart on Megan’s breasts.

Finally she decided that she hadn’t done enough. Megan’s shirt and bra were in the way. Tess desired for Megan’s breasts to be thoroughly drenched in her flatulence, so she forcibly yanked off Megan’s shirt, then ripped her bra away. Seeing the ripped bra gave her an idea. She rushed upstairs, grabbed another of Megan’s bras, and darted back downstairs. Seeing Megan ready to bolt, Tess gave her a swift kick in the stomach, which knocked the wind out of her sister.

Tess then sat on Megan’s bare breasts, then tore off her Jeans so only her panties remained as a barrier between her ass and Megan’s lovely big jugs.

“Do NOT take off your panties, Tess!” Megan pleaded.

“But I need to. I told you that I’d never let you leave this house without your breasts smelling like my ass, and I meant it.”

“You’re sick!”

Tess grinned wickedly. “Maybe I am.” She waved Megan’s bra in her face, then lowered her panties….and peed on the bra.

“I know you’re thirsty after that popcorn, so I shall give you a drink…”

She tied the now soaked bra over Megan’s mouth as though it were a surgical mask. Megan’s lips were pressed against this cloth now drenched in her sister’s urine. She wanted to vomit, but that would make her situation much worse. She swallowed the build-up of puke forming in her throat.

“And now for the extended version of Sister Brawl, the special episode that is happening right to you in real life, by your very own sister, me.”

And with Megan’s fear-filled eyes goading her, Tess began what would be an hours-long fart extravaganza.

Hhhhhhhhhhhhhhhhhhhhhhfffffffffffffffffffffffftttttttttttttttttttttttt

Oooooooooooooooonnnnnnnnnnnnjjjjjjjjjhhhhhhhhhhhhhhhhh

Puuuuuuuuuuuuubbbbbbbbbbbbbbbbbbbbbbbbbbbbb

The good news for Megan was that Tess did stop on her breasts after forty-five minutes, after which she freed her sister from the urine-bra muzzle.

The bad news for her though, was that Tess spent the entire rest of the night grinding her butt on Megan’s face and farting away, nonstop.

It didn’t end until the sun’s rays started flickering in the living room window. Tess stepped over to shut the curtains, then returned to having her butt in Megan’s face, and both sisters fell asleep in this position, Tess’ slumber filled with happiness, and Megan’s with nightmares of her sister’s butt being her chain, and this couch her prison.