A bound slave kneels before his mistress, eyes downcast, awaiting her whim. She towers over him, her heels clicking menacingly on the cold stone floor. "You think you can please me, slave?" she taunts, running a gloved hand over his cheek. He nods, eager to prove himself. She smiles cruelly, producing a CBT device from her bag. "Let's see how you handle pain, then." She attaches the device to his balls, causing him to gasp. She begins to squeeze, slowly at first, then with increasing force. The slave's face contorts, but he maintains his position, determined to endure her torment. The mistress, pleased, continues her humiliating game, relishing his suffering as she whispers degrading commands into his ear.