Lonely and horny, the well-endowed brother seeks refuge in his private space, his large cock already throbbing with anticipation. He strokes himself slowly, his mind filled with naughty thoughts of his sexy sister. His rhythm increases as he imagines her full lips wrapped around his shaft, her warm, wet mouth taking him deep. Pre-cum leaks from his tip as he pictures her riding him, her tits bouncing as she grinds on his cock. His body tenses, and with a low groan, he releases, his load spurting onto his abs.