The young mistress, her eyes gleaming with power and lust, commands her sub to assume the spooning position. She lubes up her thick, black strapon, her breath hitching in anticipation. She presses the head against his asshole, pushing slowly but firmly until she's buried deep. She begins to move, her hips rolling, her body slapping against his as she fucks him hard. She reaches around to stroke his cock, her fingers coated in lube and pre-cum, bringing him to the brink of orgasm. She leans in, her voice a low growl, "Not until I say so, slave." She continues her relentless pace, her body dripping with sweat, until she finally grants him release.