Re: The worst customers...
“Do you know who I am...”
I don’t think this is apocryphal so I’ll offer it up:
Joel Douglas, the less famous son of the actor Kirk, was performing at the Comedy Store and getting increasingly frustrated by the audience reaction. He started shouting: "You can't do this to me, I'm Kirk Douglas's son!" At which point some wag stood up and said: "No, I'm Kirk Douglas's son." Then someone else stood up, and so on.