The male mature slave is shackled to a bench, with his legs spread wide via a spreader bar. His balls are tied with a rope, and metal rings have been fitted to both behind his balls and behind the head of his defenseless dick. Watch his dick get longer and harder as more and more electricity adds to his suffering. Watch as his mistress pulls his shiny balls up with the rope, and the head of his penis swells. Listen to him scream and watch him jerk hard when his mistress turns the juice up all the way.

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