Tired of the daily grind, the brother retreats to his room for some much-needed alone time. He pulls out his throbbing cock, the sight of which sends a wave of pleasure through him. As he strokes it, his mind wanders to his sister's big, luscious ass, making his dick throb even harder. He jerks off furiously, his body tensing as he feels his orgasm approaching. With a final, powerful stroke, he releases his load, watching as it shoots out, coating his hand and the floor in a warm, gooey mess.