The ring gag in the mouth piss test

That's a mean thing to order. The ring gag with large opening prevents that my slave can close the mouth. Let's see how he is doing with it... First begin with it him in the gagged mouth to snot. That works quite well. But the real reason is to give him my delicious champagne with the ring in his mouth. Let's see how well that works. He already has to fight a little bit with the gag and my piss which I let go now... But it works quite well and as a reward I let him jerk his cock