Mistress Nica did not like the fact that this guy was too horny. She had to make him realize that he had to get a life and know what there was more to life than sex. So she facesat on him and she had him drink her pee in addition to licking her clit and the soles of her feet. The humiliation made the poor guy rethinking his life choices.
Mistress Mystique is a generous girl but this guy abused it and she was not going to let it slide. She had to punish him and she did it cruelly by turning him into a human toilet. He was shocked by what she did to him and that is how he changed. In addition to peeing on him, she spat into his mouth and she even made him lick her pussy and asshole.
Mistress Thyck wanted to get back at this guy because he pissed her off. She did not want it to happen again and so she used her pee to dominate him. She turned the guy into her pee slave and he was forced to drink her pee. She even told him that if he messed with her again, she would be forced to make him lick her asshole or eat her shit.