Mistress Sofi did not like how this student behaved and so she had to come up with a way to make him change and become a better student. After a lot of thought, she felt that facesitting on him in a hardcore manner was the best way to go about it and so she did not hesitate to do it. The mistress enjoyed torturing him and by the time she was done with him, she knew he would change.
Mistress Sofi did not like how inconsiderate her boyfriend was being. She wanted him to change from the sort of behavior he was showing and that is why she facesat on him and she choked him with her ass. In addition, the mistress used her farts to make the punishment and the humiliation worse for him. He could do nothing about it and he had to change to avoid such punishment again.