A blonde and a brunette are sitting in a bar and watching the 11pm news. A man is standing on the ledge of a high-rise building, contemplating suicide.

The brunette says to the blonde, "I'll bet you $20 that the man jumps off that building and commits suicide." The blonde thinks for a moment then replies, "OK, you're on!" They watch for a few minutes and sure enough, the man jumps off the ledge.

The blonde sighs and reaches for her wallet, but the brunette stops her, saying, "I can't take your money - I feel too guilty. I have to confess that I watched the 6 pm news this evening and I knew that the man would
jump."

The blonde replied, "Oh! I watched the 6 pm news too, but I didn't think he'd jump off again!"