Mistress Madison was out to make sure that she ruined this guy's day. She did so using her shit. The mistress made sure that the guy ate her shit and that he drank her pee. All of this was to ensure that he learned his lesson and that he would never bother her again. He regretted it and changed his behavior because he did not want to be degraded again.
Mistress Madison did not want an argumentative slave. She felt that it was a waste of her time and that it showed insubordination on his part. She did not want it to continue and that is why she used her shit to dominate him. He never did it again as he knew she would not entertain it and would also humiliate and torture him which he did not want to experience again.
Mistress Madison was misled and that was not ok with her. She wanted to make sure that this guy did the right thing and that he was not tempted to ever again lie to her. The poor guy did not know what was instore for him. He was shocked as she turned him into a human toilet and fed him her poo as well as her pee. It served him right.