Can You Cum Through the Pain?

My slave is always getting himself into trouble.  He is naked, hooded and bound to my bondage chaise. I plop my ass hard on his face and begin stroking his hard cock. Orgasms are a rare privilege but he will earn one this time. Between heavy facesitting and hard spanking and paddling of his inner thighs and ass, I remind him that he will have to cum, but only through pain and at my command.  I straddle his face front and back- hard.  While jerking him off really hard, I tell him he has 30 seconds to cum and if he doesn't, I'm bringing out my single tail. I make him cum all over the paddle and have him lick it off.  Now the beating will begin :-)