This slave was being punished for not following instructions. The mistress made him lick her shoes and then smell her stinky socks and lick her sweaty socks and he had no option but to do as the mistress wanted
BBW Lady Cathy did not want to trample her slave with her heels. But she wanted to punish him nonetheless. So she decided to use her ass instead. And given her big ass and her immense weight, she knew that it was sufficient. She sat on his stomach and for a moment, he had difficulties breathing. Then she made it worse by sitting on his face and almost choking him.
When her slave sees her grab the laptop, he lays on the sofa. She comes into the room and is happy to put her round ass in his face as she gets comfortable enough to do some work. She knows that he can smell her pussy through her thin pants and doesn't care. She lays her head back on his knees, loving the way he supports her. She knows that he is struggling to breathe but she won't move until she wants to.
When Luna sits, she loves to sit on her slave's face. She doesn't do it for long periods of time but she does it often. After getting out of the shower, she dresses in her favorite dress and black panties. Her slave knows to lay on the board and wait for her. She comes in and puts her full weight in his face and drops down hard. She knows that he can smother and doesn't want to hurt him. He loves it.