Madame Marissa had given this guy some chores to do but he did not do them as well as she wanted them done. The mistress was angered by that he did not complete the chores and she punished him for it. She chose to use her boots to force him to complete them and also told him that if he was not careful, she would crush him and do worse.
Madame Marissa felt that she needed to do something to make sure this loser did not mess with her again. She invited her friend to help her punish him and the two mistresses used their dirty feet to humiliate him. They saw no need to use pain on him. For him, the humiliation was enough and he learned the lesson they wanted him to learn so they let him go.