Madam Tulpan was not pleased with the way that this guy acted and she was so pissed that she had to do something about it. The mistress chose to use her pee to correct him and to punish him. She was sure that if she did not do it, he would not change and he would end up doing things the same way. So she turned him into a pee slave.
Madam Tulpan had a longstanding issue with her ex and they had failed to solve it when they were together and even now that they were no longer together. The mistress had to find a way to deal with him and that is why she chose to pee on him. She felt that that was the best way to deal with him. The poor guy had to agree to her solution to avoid being degraded further.
Madam Tulpan had an issue with her slave and she dominated him using her pee. She had him drink her urine from a glass and then she had him lick and smell her pubes. She slapped him and made him lick her soles when he did not do the right thing and then he had to start all over again. This time he did it the way the mistress wanted.