[speedy]

A blonde and a brunette were watching the 10 o'clock news together. The current news was about a man up on a ledge and threatening to jump. The situation cut to a commercial.
Brunette: "I'll bet you $20 he's going to jump."
Blonde: "Okay."
(then back to the newscast.)
He jumps.
Blonde: "Okay, here's my $20."
Brunette: "No, that was too easy, I can't take your money."
Blonde: "I insist. I lost!"
Brunette: "I have a confession to make. I saw the same thing on the 6 o'clock news and knew he jumped. So it wasn't really a fair bet."
Blonde: "I saw the exact same newscast, but I didn't think he would be stupid enough to jump twice!"