Miss Xantia is a sadist and inflict pain on others is what she knows best. She took her slave and trampled him on the stomach and on his face with her shoes
Anytime you take a mistress trying to enjoy herself, and you remove her chocolate from her, everything is going to go bad really fast. A slave is playing a dangerous game with the mistress, but he soon finds out that doing that is not a smart move. The mistress is going to start trampling his body and smashing all of the chocolate right on his balls inflicting a great deal of pain.