When I could see he was getting desperate, nearly to the point of orgasm, I ordered him to stop.
Then I got out a tape measure and measured his cock carefully, confirming his measurements and using this time to tease his cock in countless ways, leaving him breathless and even closer to the edge.
At the conclusion of this episode, I went back across the room from him, leaving him with his cock throbbing and very needy.
He plaintively asked if I thought his cock was normal, and I said that yes, it looked perfectly normal and healthy.
He seemed to think he was done at that point, and started to get up, but I told him to stay seated, and that I had more questions for him.