Great joke Rog. Had a long talk with someone a few days ago about why some folks don't think this kind of joke is funny. I used my prime example of "musician's humour":

Guy goes to a bar, gets into a great conversation about nuclear physics with another guy....says: "Hey, you are REALLY smart, what's yer IQ"? "200" say the guy.

Same guy gets into another conversation with someone else about philosophy. "Geez yer pretty smart" he says, "what's YOUR IQ"? "Oh, about 150" says the guy.

Later in the night, the same guy is standing around and sees someone else. "Excuse me" he says, feeling a bit playful, "What's your IQ"? The other guy says "Ummm, about 50". "Hey, what kinda strings do you use"? says the first guy.

I actually had someone (not a musician, obviously) get VERY ANGRY with me regarding that joke, and they demanded an explanation of why it was funny. Tough chore. If it happens in the future, I'd better brush up on the definition of "irony".

Rick