i sit on my incompetent slave's face

Description: I sit on my incompetent slave's face after i came home and left the slave in the room working on the pc to generate income on my account, i caught him masturbating in front of the screen.this is not good, a slave must obey the mistress and make himself useful. i decided to punish him by sitting on his filthy face and insulting him several times.this is the punishment he deserves and i will decide when to get up from his face, because i am his mistress.i am sure that next time he will do the job perfectly.