Anna Petrovna and I are having fun with the slave in the black box. Completely immobilized, chained and in a straitjacket, we play with his air supply. We decide how much and when he is allowed to breathe. Oxygen is a precious commodity, which is under our control for the slave! This makes him so horny that we play with his lust! Our vibrators on his cock make him cum really nicely!
