In a dimly lit room, a leather-clad dominatrix commands her submissive, bound in intricate rope work, to pleasure himself. He obeys, stroking his cock as she watches, her eyes gleaming with sadistic delight. She admires his body, taut and trembling with anticipation. "Harder," she orders, and he complies, his hand slapping against his flesh, the sound echoing in the room. She moves closer, her breath hot on his ear, "I want you to smack yourself in the sack, like you mean it."