The Mistress strips the slave naked and measures the length of his dick with a ruler, saying "Such a small uncut dick is useless, hahaha". The Mistress says to the slave "Do you want your dick to grow into a bigger one? I'll help you, hehehe", and plays with it by shaking it up and down and side to side with a riding crop. When the slave gets excited and gets an erection, the Mistress measures the length of his dick again with the ruler, saying "Is it still this small even when erect? Did you want to be born with a big dick? Hahaha". The Mistress makes the slave masturbate by rubbing his dick on the floor, and watches him do so, saying "It looks like a caterpillar, hahaha". When the slave is about to cum, the Mistress stops him from masturbating and puts a chastity belt on him, saying "Too bad you were so close to cumming, hahaha. You look good when you're in that because your ejaculation is stopped, hahaha".