A boy, left alone in his sister's room, finds himself drawn to her laundry basket. He picks up a pair of her panties, still warm from the dryer, and brings them to his face, breathing in her scent. His cock tents his pants, and he can't help but unzip, pulling out his hard length. He wraps her panties around himself, jerking off furiously, his mind filled with images of her pussy, her body, her moans. He fucks her panties, his hips bucking, until he can't hold back any longer. He comes, his hot cum filling her underwear, a mess of his pleasure and her scent.