John who walked into a bar as the evening news began.
He sat down next to a blonde at the bar and stared up at the TV.
The news crew was covering a story of a man on a ledge of a large building preparing to jump.
The blonde looked at John and said, 'Do you think he'll jump?'
John says, 'You know, I bet he'll jump.'
The blonde replied, 'Well, I bet he won't.'
 John placed a $20 bill on the bar and said, 'You're on!'
 Just as the blonde placed her money on the bar, the guy on the ledge did a
 swan dive off the building, falling to his death.
The blonde was very upset, but willingly handed her $20 to John, saying,
 'Fair's fair. Here's your money.'
John replied, 'I can't take your money, I saw this earlier on the five
 o'clock news and so I knew he would jump.'
 The blond replied, 'I did too; but I didn't think he'd do it again.'