Beg for It

My slave is fully bound, legs spread, cock right where I want it. I know he wants to cum badly but I am going to make him work for it. His cock and balls are being continuously stimulated by the ErosTek, so I tease him with my ass.. The thin bodysuit holds the sweaty scent of my cock and I know he wants me to press my full weight onto his face. I stroke his cock off and on, teasing it further, adjusting the electrostim at my whim. Soon, I give him what he wants and smother him completely with my ass.. then instruct him to beg from beneath it for the orgasm. His muffled cries are amusing as I him further and further. I make him beg over and over before I allow him to cum...