Madam Tulpan had a falling out with her professor and she felt that she had to teach him a lesson. He was shocked by what she did as she chose to turn him into a shit slave. He had to eat her poo as well as lick her asshole clean before she was done with him. It was crueler than he had expected it to be but there was no way out.
Madam Tulpan trusted this guy to sell her the items she wanted. She was not too bothered to check whether they were good quality but after using them for a few days, she realized that she had been sold counterfeit items. She was so pissed as she had paid the price of the original items she wanted. And so she used her shit to make the guy give her what she had paid for.
Madam Tulpan did not like how this guy discriminated against other people. He was full of prejudice and she did like it. She had to teach him to stop those habits and since he had done them for a while, she knew that it would take a lot in order to deal with him. So the mistress had the guy eat her shit as well as drink her pee before she was done with him.