Mistress Heather is training her slave to cum with his balls crushed and electrified. To aid this process she has inserted an electrical prostate stimulator to confuse and torment his senses. The electrified ball crusher is clamped ever tighter as Mistress Heather takes him on an electrifying journey through a wave of programs, until she decides it's time for him to cum. It's then that she cranks up the intensity and after spitting on his cock to enhance the conductivity of his cock and balls, she sits firmly over his face to take full advantage and pleasure from his discomfort.