You're already under my control. I direct your masturbations, I control your orgasms, I direct your entire sexuality. It's time to challenge you a little more, to drive your addiction deeper and deeper. Holding your breath while you masturbate is going to bring you so much pleasure, especially if you do it just for me. You'll only be able to pump if you stay breathless. I'm going to push you to the limit, until your brain is deprived of oxygen, and that's going to be the condition sine qua non for being able to cum at the end...