Bored and horny, this brother retreats to his room, stripping off his clothes, revealing his throbbing cock. He strokes it gently, feeling the veins pulse with desire. He imagines his sister's tight pussy, his fantasy fueling his masturbation. He picks up the pace, his hand a blur, until he can't hold back any longer. With a groan, he cums all over his stomach, his body relaxing in the aftermath of his solo pleasure.