"Excuse me," says Blair, "but you half look like Bob Barker. I don't suppose..."
"Well," interrupts Bob, "actually, I am Bob Barker."
Blair is almost speechless, (almost), but does continue, "Look Bob, I think you're great. I've watched all your shows and blah, blah, blah, etc... could you do me a favor?"
"What ever you want," says Bob.
"Well, you see I'm at another table with my friend Jim and it would really impress him if you would just come up to me and say, 'Hello Blair'."
"Sure, no problem." says Bob.
Blair rushes back to his table and Jim returns. A few moments later, over pops Bob to their table and goes up to Blair.
"Hi Blair, how you doing?" says Bob. Blair looks up and says, "Oh, piss off, Bob, can't you see I'm busy?".