This slave was too slow for lady Nora and mistress Kim Judge. They tried their best to understand him and to give him time but it did not work out and they had to punish him. They had to do it in the way in which he needed to have it done and that is why they not only did it together, but they also made sure it was painful and cruel. He was whipped butt naked and could not do anything about it.
Lady Nora and her friend wanted to dominate this guy for being weird. They had tried to talk to him but he did not do what they wanted. They felt that they now had no choice but to dominate him. The mistresses did it with their boots and they trampled him until he learned his lesson and he cried and begged them to stop. He even peed himself in the process.
Lady Nora needed to control and that is why she chose to use her double domination fetish. She asked her friend mistress Kim to help her send a cruel message to this guy and so that they could get control over him. That is why they did not care what the guy felt and they went ahead to trample and stomp on him until he learned never to mess with them.