In this intense BDSM scene, a dominant mistress trains her submissive slave in the art of CBT, or cock and ball torture. She commands him to masturbate while she watches, critiquing his technique and punishing him with harsh verbal humiliation. The slave's balls swell and turn red as he struggles to please his mistress, who delights in pushing his limits and testing his endurance. The femdom mistress uses a variety of toys and tools to tease and torment her slave's sensitive areas, all while maintaining complete control and dominance.