Madame Ellen felt that she was wasting her time with this guy because he was clueless. That is why she used her pee to torture and humiliate him. He had to know that she would not tolerate such kind of nonsense. That is why he was humiliated in a way that would send a stern warning to him. He tried his best not to be clueless after what she did to him.
Torture is what this mistress knows best. She tied up her slave and then enjoyed trampling his dick and squeezing his nipples. She was not done, and wanted to squeeze off pee from his dick like one does when milking a cow