Jake slammed the door behind him, sweat still dripping from his gym session. At twenty-four he was built thick, broad shoulders and a heavy cock that always hung heavy in his shorts. His younger brother Ryan, twenty-one and just as jacked, was sprawled on the couch in nothing but boxers, phone in hand.
"Bro, you gotta see this shit," Ryan said, voice low and dirty. He turned the screen. It was one of those underground forums full of gay incest impreg sex stories, two brothers pumping load after load until the bottom's belly started to swell.
Jake's dick twitched instantly. "Fuck, you into that too?"
Ryan grinned, eyes dark. "Been jerking to it every night thinking about you knocking me up. Filling my ass until it takes."
No more talk. Jake crossed the room, grabbed his brother's hair and yanked him into a rough kiss, tongues shoving deep. Ryan moaned and shoved his hand down Jake's shorts, wrapping fingers around that thick cock and stroking it hard.
"Get those boxers off," Jake growled. Ryan stripped fast, cock already leaking, hole twitching. Jake shoved him face-down on the couch, spread those cheeks and spat right on the tight pucker. He worked two fingers in dry at first, making Ryan grunt and push back.
"Want it raw?" Jake asked, lining up his fat cockhead.
"Always raw, big brother. Breed me like in those stories."
Jake pushed in with one hard thrust, burying every inch. Ryan's hole stretched wide around him, hot and slick after the spit. Jake fucked like he meant it, hips slapping loud, balls swinging against Ryan's taint. Every stroke punched deep, aiming for that spot that made Ryan's cock drip on the cushions.
"Take it," Jake snarled. "Gonna pump you full till your guts are swimming in cum."
Ryan pushed back, meeting every thrust. "Deeper. Knock me up. Make my belly grow with your kid."
Jake pulled out, flipped him onto his back, and slammed back in. He hooked Ryan's legs over his shoulders and pounded harder, sweat flying. The couch creaked under them. Ryan's hole made wet, filthy sounds around the thick shaft.
Jake leaned down, biting Ryan's nipple. "Gonna breed this pussy every day. Fill you till it sticks."
Ryan's cock jerked untouched, shooting ropes across his own abs. His hole clamped down, milking Jake. Jake roared and unloaded, thick jets of cum flooding deep, pulse after pulse until it leaked out around his cock.
They didn't stop. Jake stayed hard, kept fucking the load deeper, adding more with every orgasm. By the third round Ryan's hole was sloppy, cum and spit running down his crack. Jake pressed a hand to Ryan's lower belly.
"Feel that? Gonna swell up right here. Gonna be pregnant with my load."
Ryan nodded, eyes glassy, begging for more. They moved to the bed, Jake taking him on all fours, then riding, then folded in half. Every position ended with another heavy creampie, Jake grinding in to make sure it stayed.
Hours later Ryan lay on his back, legs spread, belly already feeling full and warm. Jake lay beside him, fingers scooping leaking cum back into the stretched hole.
"Tomorrow we do it again," Jake said. "Keep filling you till it takes."
Ryan smiled, lazy and satisfied. "Can't wait to show you those stories with a real belly."
They fell asleep like that, Jake's cock still half-hard inside his brother, another load already building for morning.
