Mistress Katja did not like how her slave's mouth was stinking. He did not heed her call to improve his oral hygiene. She decided to make him do it and she did it by facesitting on him. She had her ass, which she made sure was smelly, on his mouth and she made sure he licked it and he smelled it. Then she told him if he did not improve his oral hygiene, that was the treatment he should look forward to every day.