User Poll::Jokes!

I haven't had a good laugh in quite a while.
What's the funniest joke you ever heard/read? (And where did you learn it?)
I'll go first:
A conductor was putting on a performance of Beethoven's 9th Symphony at 8. Unfortunately, his chorus couldn't be there until 6, so he started rehearsal without them. In the middle of the rehearsal, the air conditioning broke, so they brought out huge fans to keep the orchestra cool. This worked, but the conductor's score kept blowing away, so he had to tie it down. During this, the bass section and two cellists decided that they had had enough, so they went to the tavern across the street and got really drunk. In fact, the two cellists never came back. So six-o-clock rolls around and the chorus arrived. By then the air conditioning had been fixed and they continued with the rehearsal. Finally, it was 8 and the concert began. The concert was almost finished when the air conditioning went out again, so the fans were brought out and the conductor tied his score down. It was very hard to try and turn the page while conducting, and he was about to quit, because it was the bottom of the ninth, the score was tied, the basses were loaded, there were two outs, and the fans were going wild. (Taken from http://www.thefrenchhorn.net/jokes.html).