This guy was cold and these mistresses did not like that about him. They felt that it was something he needed to lose and so they made sure that he learned his lesson and that he became a warmer person. That is why they chose to use their outdoor pissing fetish to deal with him. It worked and he learned his lesson the hard and cruel way and he changed for the better.
This guy was too careless for these mistresses and they felt that they had to dominate and torture this guy. He did not expect what they did to him but he did not have a choice either. He had to do what they wanted him to do and the mistresses had fun at his expense. He learned his lesson the hard as well as cruel way before they let him go.