This mistress has a big ass and she loves to use it to dominate. She enjoyed dominating as well as humiliating him and she did it with her smothering fetish. In addition, the mistress used her farts as well and it was a painful and humiliating punishment for him but he had to do it the way she wanted it to be done. He could not do anything about it.
This mistress wanted her boyfriend to lick her ass and that is what he did. But it was not easy getting him to do it. She had to warn him that if he did not lick her ass, he would not be forgiven and as a result, he would not get sexual privileges. In addition, she would also consider a stronger punishment probably in the form of pain and humiliation at the same time.