The house was empty except for us. Mom and Dad had left for the weekend, and my eighteen-year-old sister Emily and I were finally alone. I was nineteen, horny as hell, and she knew it. She walked into the living room wearing nothing but a tiny tank top and panties, her nipples poking through the thin fabric. "Bro, you keep staring," she said, smirking. "Want to do something about it?"
I didn't answer with words. I grabbed her, spun her around, and bent her over the couch. Her ass was round and firm, and I yanked her panties down in one rough pull. "Fuck, your pussy's already wet," I growled, sliding two fingers between her lips. She moaned and pushed back against my hand. "Been thinking about your cock all day," she admitted, voice thick. I freed my dick, thick and throbbing, and rubbed the head up and down her slit before slamming inside.
Emily cried out as I buried myself to the balls. Her tight cunt gripped me like a fist. I fucked her hard and fast, the couch creaking under us. Skin slapped skin with every thrust. "That's it, take your brother's cock," I grunted, reaching around to rub her clit. She came quick, shaking and soaking my shaft, but I didn't stop. I pulled out, flipped her onto her back, and shoved back in. Her legs wrapped around me as I pounded her, tits bouncing with every stroke.
We moved to the floor. She got on all fours and I took her from behind again, deeper this time, my balls slapping her. "Harder," she begged. "Fuck your little sister like you mean it." I did, gripping her hips and ramming in until she screamed through another orgasm. When I was close, I pulled out and sprayed thick ropes across her ass and lower back.
She reached back and rubbed it in, then turned and sucked me clean, tongue swirling over every inch.
We didn't stop there. Later that night she rode me on the kitchen table, grinding her clit against me until she squirted all over my stomach. I bent her over the counter next, fucking her ass with spit and cum for lube while she fingered her pussy. By morning we were still going, tangled in the sheets, sweaty and raw, promising each other this was only the start of our secret.
