Mistress Mara doesn't ask much of her slaves. She only asks for their paychecks and unlimited shopping sprees. When she doesn't get that from one slave, she calls him to the sofa. She tells him that he is worthless and she sits on his face. As she controls when he breathes with her ass and crotch, she tells him exactly what he means to her. She wants him to know he isn't worth the air she smothers out of him.