She's been training him for weeks, teaching him the art of chastity and submission. Today, she's decided it's time for a test. She sits him down, his cock locked away in a tight cage. 'Today, we explore your limits,' she says, her voice a seductive purr. She takes his hand, guiding it to her panties. 'Make me cum, slave. But don't you dare touch yourself.' His fingers tremble as he obeys, her wetness coating his digits. She moans, her body writhing, but he knows better than to stop. Not until she says so. Not until she's ready to release his cock from its prison.