The comedian took advantage of the man's Southern accent by saying, "Are you hoping that by then you two won't be related anymore?" It seemed off the cuff, and it drew several laughs, but it left me with a pressing question: Was the Southern man a plant? I didn't see him in the dark club, and even judging by his voice I couldn't tell where he was seated, so I couldn't ask him, so I decided to ask the comic himself.
After he had left the stage to considerable applause, I made my move. I was a little embarrassed, because I thought he might make fun of me for not knowing better... but I started to ask, "Excuse me? I thought you were very funny, but the wedding joke... Was that scripted, or--"
Suddenly another man appeared behind the comedian. I found out later that it was the Southern man who had been laughed at during the performance. He had a gun. I tried to warn the comic, but the shots were louder than I was... and faster.
I got my answer, though the comedian did not live to tell me.