Post-workout Sweaty Ass Facesitting

I pin down the slave on the floor using my sweaty feet - but I wont throttle him under my feet today - Ill instead sit down on his face with my full weight and throttle him under my sweaty arse! The weight of my assets presses his nose deep into my arse crack and theres no way he gets a single whiff of air. After a while I tell him that I wont get up - hell have to lift me off his face if he wants to breathe! But after a while, he starts fighting so much, that I slip off his face - and of course I cant tolerate that! I truss his forearms together of his head to make it even harder for him - and then sit back down on his face and continue to smother him.