The apartment was quiet when Jake walked in, but he knew his older brother Mark was home from the way the air smelled faintly of sweat and that cheap body spray Mark always used. At twenty-three and twenty-five, they had stopped pretending years ago. The door clicked shut behind Jake and Mark was already on him in the hallway, shoving him against the wall with a low growl.
"Missed this ass," Mark muttered, yanking Jake's shorts down in one rough pull. Jake's cock sprang free, already half-hard from the anticipation that had built during his drive over. Mark dropped to his knees without another word and spread Jake's cheeks, burying his face between them. His tongue dragged hot and wet over Jake's hole, licking deep while his hands gripped the firm flesh hard enough to leave marks.
Jake groaned and pushed back. "Fuck, yeah, eat it." Mark's breath came hot against his skin, and then it happened—the first long, rumbling fart that Mark let out right against Jake's hole. The warm, musky blast hit wet and direct, making Jake's cock twitch and leak. They both loved it, that filthy intimacy that turned their sessions into something even dirtier. Mark inhaled it like it was the best thing he'd ever smelled, then licked again, tongue pushing inside while another shorter fart slipped out.
Mark stood up fast, spun Jake around, and bent him over the kitchen counter. He spat on his own thick cock and shoved in without much prep, knowing Jake could take it. The stretch burned sweet and Jake grunted, pushing back to take every inch. Mark started thrusting hard, balls slapping, the sound wet and obscene in the small room. Every few strokes Mark let another fart rip, the vibration traveling through his body and into Jake's ass.

The smell rose between them, sharp and intimate, making Jake's hole clench tighter around his brother's dick.
"Smell that, little bro?" Mark rasped, voice raw. "That's all for you." He reached around and grabbed Jake's cock, stroking it in time with his thrusts. Jake's moans grew louder as another hot fart puffed out around Mark's shaft, the sensation making them both shudder. Mark pulled out just long enough to drop to his knees again, spreading Jake wide and pressing his nose right against the hole. He sniffed greedily, then farted back, the two of them trading the dirty air like it was foreplay.
They moved to the bedroom, bodies slick with sweat. Mark lay back and pulled Jake on top, guiding his brother's cock into his own hole this time. Jake rode him slow at first, then faster, grinding down while Mark's farts came in short bursts with every bounce. The room filled with the heavy, earthy scent and the slap of skin. Jake leaned forward and kissed Mark hard, tongues tangling while their bodies rocked together. Mark's hand wrapped around both their cocks, jerking them off together as another long fart escaped him, warm and wet between their pressed thighs.
Jake came first, shooting thick ropes across Mark's stomach and chest. The sight pushed Mark over the edge; he bucked up hard and flooded Jake's hole, his orgasm hitting with a final, powerful fart that made Jake moan again. They stayed locked together, breathing heavy, the smell of sex and gas thick around them. Mark pulled Jake down for another slow kiss, hands roaming possessively over his brother's back.
"Shower with me," Mark said after a minute, voice softer now but still rough. Jake nodded, already feeling the familiar pull for round two. They stumbled to the bathroom still half-hard, the water running hot while they soaped each other up, fingers sliding into slick holes and more quiet farts escaping under the spray. By the time they dried off, the bed was calling again, and neither brother had any plans to leave the apartment for the rest of the weekend.