When this guy pissed mistress Dula off, he did not expect her to retaliate but she did. And she did it in a way that he had never seen and he did not expect it to happen that way. The mistress turned him into a shit slave and she forced him to eat her poo and to drink her pee. He had no choice but to do it and she was now even with him.
Mistress Dula wanted to shit on this new slave as a way to not only humiliate him, but she also wanted to scare him as well. She felt that the best way for her to do so was to have him eat her poo. That way, he would never want to mess with her or incur her wrath. She was right on the money as that is what happened exactly.