There was a thread like this years ago, and searches aren't popping it up. : (
The funniest story from there is lost, now- hopefully the guy reposts it. If he does, I'll delete my paraphrase.
He was playing an open tourney and was extremely nervous, esp. because a super pro was on the next table and a crowd had formed to watch him. This guy gets so nervous during his match that he takes a break, goes outside, and washes his hands. Gives himself a pep talk. Comes back in, focused and determined.
He grabs his cue, runs up to the table, and blam, blam, blam, blam-blam! He runs out the whole table. Dead silence. Then the pro says, "Good shooting- but YOUR table is that one over there," pointing one table over.