Mercedes has thought of a special idea for her slave. He should learn to properly suck a cock. So she grabbed her favorite dildo and spits on it to make it wet. Now the slave gets it into his mouth and has to suck it. Of course she spits on it in between a few times - to keep the slave mouth wet enough. Next she holds the dildo right next to her crouch and really face-fucks her little slave with the spit-covered dildo. Now he knows how to suck a dick!