Mistress Zephy was still mad at her ex and she had to make sure she took out her anger on him. That way, she would be in a position to heal and to let things go. That is why she went out of her way to torture him as well as degrade him. She settled on doing so with her pee and he was the human toilet. He had to drink it all.
Mistress Zephy had tried her best to tolerate this guy but she felt that he had become too much and she had to do something about it. That is why she used her piss fetish to torture him. He was crushed and trampled to make him realize that he had to comply with what the mistress wanted him to do. Needless to say, he did not misbehave again after that.
Mistress Zephy had warned her husband against doing what he had done. He insisted and she kept quiet until it backfired. She had to teach him a lesson and she did it using her pee. She made him drink her urine and when he was done, he had to eat her pussy the way she wanted it eaten. When she came, she trampled him and farted on him before finishing her punishment.