Bored and alone, he retreats to the bathroom, his mind racing with lustful thoughts. He locks the door and begins to undress, his cock already hard at the mere thought of his friend's tight ass. He sits on the edge of the tub, his legs spread wide, and begins to stroke his length. His finger finds its way to his ass, pushing in and out, imagining it's his friend's cock filling him. He moans, his strokes becoming more urgent, his breath coming in short gasps. He can't hold back any longer, his cum shooting out, painting the bathroom wall with his desire.