Bound and gagged, the submissive's eyes widen as his Domina approaches, her heels clicking on the cold stone floor. She straddles his face, her ass pressing onto his mouth, her juices mingling with his spit as she grinds slowly, torturously. She leans back, her hands on his chest, controlling his every breath. Her other hand strokes his cock, her spittle making it slick, her touch firm yet teasing. She whispers commands, her voice laced with power, as she brings him to the brink of ecstasy, only to pull back, her control absolute, her pleasure in his torment evident.