I want to see how long I can sit on my slaves face, so I tape up his mouth and bind my slave tight on my bed and get out the timer. I start easy at first, but push this slave to the edge. He has no choice but to lay there with his nose up my ass while I control when and how he breathes. If he cant meet my time goals or complains, he gets a swift knock in the balls with my ball knocker. I cant help but laugh while he tries to wriggle free, trying to get any gasp of air he can muster. How long can he last under my ass? Will he set a new record, or will he pass out trying?