Lady Phoenix was pissed at the way in which this guy was ill mannered. She felt that he needed to be punished for it because he had been given enough time to change but he did not. So the mistress painfully and cruelly tortured him to make him learn his lesson the hard way. He never messed with her again after she turned him into a pee slave and had him drink urine.
Lady Phoenix wanted to try pee target practice and she did it at the expense of this guy. And while he felt bad enough being humiliated by one mistress, lady Phoenix invited her friend and the two of them combined efforts to torture him. They both peed on him and he had to drink pee from 2 mistresses. It was a cruel punishment and he learned his lesson the hard way.