Mistress Katherine has her slave locked up by his balls. It is punishment day for her slave. She is starting with her slut's helpless balls. She beats his balls with a leather crop as the slave struggles to keep his balance in the wooden ball trap. Mistress Katherine shows no mercy as she punishes her slut's balls. Katherine demands the slave keep good posture and accept the ball beating. She knows that he has no choice. Short of ripping of his nuts, he cannot accept the ball trap and her ruthless punishment. Then Katherine picks up a cattle whip and finishes off the slave's bruised and aching balls.