a blond and a brunette are watching the news. it showed this woman that was about to jump of a bridge. the brunnette said
"i'll bet you 50 bucks she jumps". the blond agrees and sure enough, the woman jumped off and died.
later, the brunnette said
"look, i lied to you. i saw this on the 4 o' clock news, so i knew what was gonna happen."
the blond said
"i know, so did i. i just wanted to see if she would jump again."