With her slave cuffed to the examination table Mistress proceeds to ask him why he should be allowed to keep his cock and balls before running through the way she could extract his balls.

Using her violet wand to simulate what it might feel if she were to make an incision, the wand crackles as it dances over the skin of his genitals before turning to her pinwheel.

It seems slave is sexually aroused by the thought of Mistress removing his manhood and performing a complete castration.