I walked into the house after midnight and there he was, my older brother Jake, sprawled on the couch in nothing but gray boxers. His thick cock was already half-hard, the outline pressing against the fabric like it was trying to bust out. We had been dancing around this for months, ever since he moved back in after the breakup. Late-night talks turned into him admitting he jerked off thinking about me, and me admitting the same. Tonight the air felt thick with it.
"Couldn't sleep again?" I asked, kicking off my shoes.
Jake looked up, eyes dark. "Been waiting for you. Get over here."
I crossed the room and dropped to my knees between his spread legs without another word. His hand went straight to the back of my head, pulling me forward. I yanked his boxers down and his cock sprang free, heavy, veined, already leaking at the tip. I wrapped my fist around the base and licked the head, tasting salt and him.
"Fuck, yeah," he growled. "Suck your brother's dick like you've been wanting to."
I opened wide and took him deep. His cock filled my mouth, stretching my lips, the head bumping the back of my throat. Jake's hips lifted, pushing more in. I gagged once, spit running down his shaft, but kept going, bobbing fast and sloppy the way he liked. My own cock was rock hard in my jeans, straining.

He pulled me off after a minute, breathing hard. "Strip. I want to see that ass."
I stood and peeled everything off. Jake's eyes raked over me, then he stood too, turning me around and bending me over the arm of the couch. His big hands spread my cheeks. A thick finger rubbed over my hole, dry at first, then he spit right on it and pushed in.
"Tight little brother hole," he muttered. "Been dreaming about wrecking this."
He worked two fingers in, then three, stretching me open while I pushed back against his hand. When he pulled out I heard him spit again, then the blunt head of his cock pressed against me. No lube, just spit and raw need. He shoved in slow but steady, forcing my ass to take every inch.
I groaned loud as he bottomed out, balls pressed against me. Jake didn't wait. He started fucking hard, deep strokes that made the couch creak. Each thrust punched the air out of me. His hands gripped my hips hard enough to bruise.
"Take it," he snarled. "Take your brother's cock. This is what you wanted, right? Gay incest fantasies finally coming true."
"Yeah, fuck me," I gasped. "Harder."
He did. The slap of skin on skin filled the room. Sweat dripped off him onto my back. He reached under and grabbed my cock, stroking it in time with his thrusts. I was leaking all over his fist.
Jake pulled out suddenly and flipped me onto my back on the couch. He shoved my legs up and slammed back in, now watching my face while he fucked me. His cock looked obscene disappearing into my stretched hole. He leaned down and kissed me rough, tongues fighting, teeth clicking.
"Gonna fill you up," he said against my mouth. "Pump my load deep in my little brother's ass."
I nodded, too gone to talk. He pounded faster, the couch slamming the wall. His balls tightened and he buried himself to the hilt, cock pulsing as he shot. Hot cum flooded me, thick and endless. The feeling pushed me over. I came untouched, ropes of cum splattering my stomach and chest.
Jake stayed inside me while we caught our breath, slowly softening. When he finally pulled out, cum leaked out of my hole and down my crack. He scooped some up with two fingers and fed it to me. I sucked them clean.
We didn't say much after. He pulled me against his chest on the couch, both of us sticky and spent. His hand rested on my ass, one finger idly circling my used hole.
"Next time," he said quietly, "I'm gonna wake you up with my cock in your mouth."
I smiled against his neck. "Can't wait."
We stayed like that until the sun came up, knowing this was only the start of every dirty gay incest fantasy we'd been holding back.