Shutting the door to their shared bathroom, the siblings lock eyes, their breathing heavy with anticipation. She lies back, spreading her legs to reveal her pink, puckered hole. He watches, mesmerized, as she slips a dildo into her ass, moaning softly. Unable to resist, he joins in, his fingers replacing the toy, stretching her tight rim. She begs for more, and he obliges, slamming his cock into her ass, fucking her rough and hard until they both explode in a sweaty, spent mess.