Mistress Nica wanted this guy to learn that things did not work his way and that he had to learn to listen to her. And that is why she took him to the stable and she forced him to lie down while naked. The mistress threw horse manure on him and she trampled him for her own fun and she enjoyed humiliating him for her own fun and to teach him a lesson.
Mistress Nica loves rubber boots because they do not make any noise and she can move stealthily in them. That is what she did as she wanted to catch this slave in the act. She caught him sniffing her panties and masturbating to her photos and she trampled and smothered him with her rubber boots and her ass respectively. That is when he realized that he had messed up and he stopped it.
Mistress Nica does not like shallow-minded people and this loser was and she had to do something about it. That is because she felt that not doing anything giving a stamp of approval to whatever he did. So the mistress chose to use her rubber boots to trample him and this was after she had chained his balls and she pulled hard to make him feel the pain he needed to feel.
This mistress caught her neighbor peeping on her and she was pissed. She did not want that to happen again and so she used her rubber boots to trample him. The mistress did this after she had forced him to undress. He was also asked to jerk off as she trampled him and he was in a lot of pain but she did not care about what happened to him.