Mistress Madison was pissed that this guy thought that he could do or say whatever he wanted yet he was wrong. He thought he was right and did not want to be told otherwise until the mistress proved that he was wrong and she was right. She was so pissed at him that she had to shit on him for him to learn to humble himself at all times. He did.
This guy was too bossy for her and she did not like that. She felt that the best thing to do to him was to torture him and she did not hesitate to do it with her shit. The mistress ensured he ate her shit and that he jerked off as she watched. He had no choice but to do all that she had asked him to do. He never messed up again.
Mistress Madison wanted to pass a message to this guy and she was tired of always trying to explain every last detail. She had to find a way to do it that he would not misunderstand and that he would not ignore. That is why she chose to shit on him and force him to eat her poo and drink her pee. He had no choice but to do it.