"Let's test your new toy," she purrs, guiding her submissive's hands to the device. He tentatively touches the cold metal, feeling the unyielding grip on his cock. She pushes his hands away, running her own fingers along the device, making him squirm. "Too tight?" she asks again, her voice a sultry challenge. He swallows hard, "I... I think it's just right, Mistress," he manages to say, his voice thick with desire and the effort of holding back his growing erection.