Mistress Valeria was tired of the kind of behavior her slave was exhibiting and she had to put an end to it. That is why she went out of her way to make him lie down naked and she trampled him with her bare feet. She did it on his entire body and he was in a lot of pain and he realized how he had messed up and he begged for mercy.
Mistress Valeria was pissed at the way this guy did things. She felt that he needed to learn his lesson the hard way and so she used her bare feet to trample his nuts. Even as he cried, she continued to trample him because she knew he would not learn his lesson if she stopped. He peed himself but she still trampled him until he almost shit on his pants.