Mistress Anna was tired of how proud her boyfriend was and she felt that it was the negative kind and it would be a major hindrance for his progress. So she chose to use her facesitting fetish to punish him for his own good. As he choked, he realized that the mistress was serious and took her seriously from then on and he tried to take it down a notch.
Mistress Roux had a selfish colleague and she did not like. So she lured him to her house and she led him on. She had him undress and she then facesat on him like never before. That is how he found himself being choked and being made to beg her for mercy and promising her never to be a selfish person. He had to change as he did not want a repeat of what she made him go through.
Lady Annabelle had a slave who embarrassed her a lot and she did not want to be embarrassed again. So she sat down and came up with a way to deal with him so that he would never do any of that nonsense again. She choked him with her ass today as she read a book and she knew it would take time for him to get over what she had done to him.