Billy, the protective stepbrother, finds his petite blonde stepsister Britt sprawled on the couch, her tiny body barely covered. Seizing the opportunity, he kneels between her legs, his thick cock already hard. He runs his fingers through her small, tight pussy, making her squirm. She whimpers, "Billy, please..." He responds with firm, deep strokes, filling her, making her gasp. His pace quickens, slamming into her, his balls slapping against her small ass. Britt's body trembles as she cums, her juices dripping down Billy's cock. He pulls out, and Britt hungrily swallows his cum, their eyes locked in a taboo dance.