You look up at him with hesitation in your eyes.  He is a real man and every fiber of your being tells you to do as he says, even though it goes against everything you have ever believed. 

You trust him. He was your first. He taught you to suck his cock. He took your cherry and stretched out your cunt to fit his cock perfectly. He has taken the time to show you your proper place in life, and you appreciate that. You have come to, not only accept his cock inside of you, you have learned to crave it. You feel complete only when he is ramming his meat in one of your holes. 

Even so, becoming his urinal feels like a big step. You are kneeling in front of him with his cock down your throat, waiting for him to empty his bladder into your stomach. You are going to be digesting his waste. This is the lowest of the low. You will be nothing more than a place to him to piss into. An convenient object for him to use so he does not have to walk all the way to the bathroom. But you trust him. If he says that this is what you were born to do, what you were made for, then maybe it is true. Maybe you are nothing more than a set of holes put on this earth to make the lives of real men better. Maybe wrapping your cock sucking lips around his shaft and swallowing his piss is the best use for your mouth.

You trust him, so when you feel his cock flex in your mouth and the hot urine begin to flow, you swallow, as instructed. It never seems to end, you kneel there for several minutes looking up at him as he pisses down your throat. When he finishes, you carefully suck the last drops from him and make sure he is clean.  He pats you on your head and walks away. Having used you as a toilet, he is now done with you.

Kneeling in the empty room, you realize that you feel…….fulfilled is probably the best word for it. You have served your purpose.