Billy Frost DE, alone in his room, can't resist the allure of his stepsister's discarded panties. He gingerly picks them up, sniffing the faint hint of her scent before wrapping them around his stiffening cock. His solo session begins, slow and steady, his hand gliding up and down his lengthening shaft. He imagines his sister's touch, her gasps, her moans, as he picks up the pace. His heart races, knowing she could walk in at any moment, adding a thrill to his forbidden masturbation.