In this adult sibling role-play, the younger sister has just gotten a boyfriend and wants to improve her blowjob skills to impress him, so she recruits her brother as her practice partner. Insisting that oral is fine even between siblings, she sucks him off and immediately begs, “One more time!” Even after he cums across her face, she keeps wetly working his cock without a break, forcing load after load from him until his cock is completely spent. She is far more serious about practicing than he ever expected.