I was out of town on business and my Master assigned me to go to a particular gay bar in town and offer to suck the cock of the first person who was interested.  I went to the bar and had a drink.  After a couple of friendly conversations, a man walked by and introduced me to his friend. The friend was apparently in a committed relationship, since he soon excused himself to go home to his husband, leaving me with the man who had introduced me. He was in his 50s I would say, or looked it anyway, a bit overweight, graying hair.

It didn't take long for him to ask me how I had found the place or what I was doing there or something that left the door open to say that I had been sent by my Dominant Mistress. His face was clearly shocked, both by the Dominant and the Mistress, and he asked, "a woman?" I said yes, that I was the owned property of a woman who had sent me to the bar to find a man and suck his cock. He looked even more shocked after I said that, but very excited. He said, so you are going to suck my cock,he said that several times, and each time I just said yes. I told him that there were rules and that we had to use a condom, that my Mistress is very protective and that she did not give permission for him to fuck me, only to suck his cock.

When we arrived at his place, I just started to strip, totally naked, he was still clothed, and I knelt down on the futon, he was sitting on the couch. He told me how beautiful my body was as I unzipped his pants and took his cock out. He was a bit hairy, chest, legs, not shaved. He was pretty hard to begin with and then stroked himself to very hard, as I put a condom on and went down on him. He was average size, but pretty hard, so taking all of his cock choked me a little, he seems to like that so I kept taking him deep and gagging on his cock. I sucked him until he came and then I got dressed and left.  I am not sure what he was thinking at that point, he still looked a little shocked that this had happened.