I slammed the door shut behind us the second we got home from the bar. Jake, my little brother, was already pulling his shirt off, his chest heaving and sweaty from the night out. "You been staring at my ass all fucking night, big bro," he growled, kicking his jeans down. His cock was already hard, thick and leaking at the tip.
I grabbed him by the hair and shoved him against the wall. "Shut up and bend over." My hands ripped his briefs down, exposing that smooth, round ass I'd been dreaming about since we were teens. I spat on my fingers and shoved two straight into his hole, working him open rough and fast. Jake moaned like a slut, pushing back on my hand.
"Fuck me, please. Breed me like you always say you will." His words went straight to my balls. I pulled my fingers out, lined up my fat cock, and drove in balls-deep in one thrust. His tight ring stretched around me, gripping every inch as I started pounding. Skin slapped loud and wet. I fucked him like I owned him—because I did.
"Take it, little bro. Gonna pump this pussy full." Jake whimpered and begged, his own dick swinging between his legs as I railed him. I reached around and stroked him hard while I drilled deeper, hitting that spot that made him shake. Cum started leaking from his cock in long ropes onto the floor before I even finished. I didn't slow down. I hammered until my nuts tightened and I unloaded, flooding his guts with thick, hot spunk. Pulse after pulse, I kept thrusting to push it deeper.
We didn't stop there. Over the next weeks it became our routine. Every night I'd bend Jake over the couch, the kitchen table, or just drop to the floor and mount him doggy-style. I'd talk filthy the whole time. "This hole's mine. Gonna knock you up, bro. Make that belly swell with my kid." Jake would push back, moaning, "Yes, breed me. Fill me up." I'd cum in him three, four times a session, leaving his ass sloppy and dripping. He'd finger the mess back inside afterward, keeping it where it belonged.
A month later Jake started getting sick in the mornings. Then his stomach pushed out, firm and round under his shirts. The doctor confirmed it—male pregnancy, rare but real in our family line. Jake's belly grew fast, tight and shiny, his nipples darkening and sensitive. He looked obscene, walking around the house naked with that pregnant gut leading the way, his cock always half-hard from the hormones.
I couldn't keep my hands off him. I'd come up behind him while he was cooking, reach around that big belly, and slide my cock between his cheeks. "Look at you, knocked up by your own brother. Fucking hot." I'd bend him over the counter and sink in slow, feeling how much tighter and hotter he was now. His pregnant body squeezed me perfectly. I'd fuck him with long, grinding strokes, one hand rubbing his swollen belly while the other jerked his leaking dick.
Jake loved it. "Harder, bro. Fuck your pregnant brother." I'd speed up, slapping his ass, watching his belly sway with every thrust. When I came I'd stay buried deep, grinding to make sure every drop stayed inside. Sometimes he'd ride me instead, straddling my lap on the couch, that heavy belly resting on my chest while he bounced on my cock. Milk started leaking from his tits by the second trimester. I'd suck it out while he fucked himself on me, tasting sweet and warm.
We kept going right up to the end. Late at night I'd lay him on his side, lift one leg, and slide into that always-wet hole. Slow and deep, talking dirty about how I was going to breed him again after this one. Jake would clench around me, cumming hands-free as I pumped another load into his pregnant body. His belly would tighten with contractions sometimes, but he'd beg me not to stop until I finished.
The night our kid was born I fucked him one last time in the shower, holding his massive belly while I came inside him.
He delivered healthy a few hours later. We didn't slow down after. As soon as he was cleared we were back at it, Jake's post-pregnancy body even curvier, his ass fuller. I kept breeding him every chance I got, promising the next load would stick again. He always took it with a grin, spreading his legs and moaning, "Give it to me, big bro. Knock me up again."
We never told anyone the truth. To the world we were just close brothers raising a kid together. Behind closed doors we stayed filthy, raw, and constant. Jake's belly swelled again before the first child turned one. I kept him pregnant as often as I could, fucking him through every stage, filling him with cum until it leaked down his thighs. That was our life—brothers, lovers, and constant breeders.
