Mistress Mercedes wants an orgasm and her slave is nothing but a human vibrator for her use. As she mounts his face with her ass, Mercedes orders him not to breath as she rubs her ass all over his face, but the slave fails to do so. Mercedes makes him beg for a second chance, and this time tells him he can use his tongue. But she also warns him very clearly Less Breathing, More Licking! This time the slave obeys and pleases Mercedes ass, and then her pussy, with his tongue. Mercedes orders him to keep sticking his tongue out further as her pussy rubs up and down his face, getting her closer and closer to orgasm. When Mercedes does cum, she tells her slave that she is glad that his pathetic face is good for something. When he tries to thank her for the privilege of being her sex toy, Mercedes coldly reminds him that he is not allowed to talk. After all, he is just a thing for her to use, nothing more.