Madame Ellen asked this guy to eat her shit but he refused. She was furious as she had an issue with how he took orders and here he was refusing to take another one. So she shoved the shit into his mouth and made sure he ate it and that he swallowed it. The mistress warned him never to disobey a direct order if he did not want such degradation again.
Madame Ellen had asked this guy to stop stalking her but he did not listen to her. He went on doing it and he made her uncomfortable and she was not going to let him continue doing that to her. So she used her shit to dominate him and to teach him a lesson. He had believed she would not do anything about it but he was shocked when he was made to eat shit. He stopped.
Madame Ellen did not like how poor in class this student was. He did not try anything to improve his grades and he was always playing. She felt that he was an intelligent child but he needed to work harder and study in order to improve his grades. When she tried to talk to him and she did not make any headway, she felt the only solution left was to humiliate him so she fed him her poo.
Madame Ellen considered this guy her enemy because he was always sabotaging whatever she did. She was not going to let him get away with what he did. That is why the mistress plotted how to degrade him. The mistress tricked him and when he took the bait, she made him eat her shit. He had to also drink her urine before she warned him of worse consequences if he did not stop sabotaging her.