Goddess Nemesi wanted to pass info to this guy but he did not seem to understand her. So she had to punish him for it and she chose to dominate as well as humiliate him. That is why she had to shit on him and had to force him to eat her shit as well as drink her pee. He had no alternative but to do it all the way she wanted.
Goddess Nemesi did not like how this guy was late. He was late deliberately as he did not have a good excuse for it. She had to punish him for it and that is why she chose to dominate and to degrade him. The mistress settled on using poo to do it and by the time she was done with him, he had learned the art and value of keeping time.