Mistress Wael wanted this guy to learn that messing with her was detrimental to him and he would not want to do it for his own sake. She wanted that to be a lesson for him and to others as well so she used her shit to punish him. The guy was turned into a toilet slave and he had to eat her poo as well as drink her pee.
Mistress Wael is a very unpredictable person and today she shocked this guy by forcing him to eat her shit and smear it on himself. This shocked him as they had just had sex in the shower a few minutes earlier and he was in good spirits. But she did not care about that and she made him eat her shit without even telling him why. He was lucky he was in the shower as he took a shower immediately after.