A blonde, brunette, and a red head are all on there way to heaven. God says to make it you'll have to climb 100 steps and every 10 steps God tells a joke. If any of them laughs on any of the jokes they fall to the other place. The brunette goes first and makes it to the 20th step, laughs and falls. The redhead makes it to the 40th step, laughs and falls. The blonde makes it to the 99th step and laughs. God asks "Why are you laughing now?" The blonde answers "Because I finally got the first joke!"