Tired of the tension between them, a curious sister can't resist the urge to masturbate in front of her brother, hoping to catch a glimpse of his reaction. As she strokes her clit and pinches her nipples, her brother's gaze falls on her bare pussy, making his massive cock twitch in his pants. Their shared lust grows, and when she dares him to touch himself too, he doesn't hesitate. The sight of his thick, veiny cock in his hand sends her over the edge, and they both cum hard, leaving them hungry for more.