The slave, positioned on his knees, is made to watch as his mistress selects a monstrous, realistically veined dildo from her collection. She lubes it up, the slick sound filling the air, and presses it against his puckered hole. He tenses, but she commands him to relax, to take it like a good little toy. She pushes, and he gasps, his body stretching to accommodate the immense size. She fucks him, slow and steady, her other hand stroking his cock in time with the thrusts. His moans fill the room, a symphony of pleasure and pain, as he's used, his body a vessel for her pleasure.