A Blonde, Brunette, and Redhead all meet at the Stairway to Heaven...
An angel at the top says, "I'm going to tell a joke to you all. If you do not laugh, you may advance one stair, but if you DO laugh, you'll fall off into Hell."
The angel tells the 1st joke and the women do not laugh. They all advance. The angel tells the 2nd joke and the Redhead laughs, and she falls off the Stairway.
On the 6th joke, the Brunette laughs and falls of the Stairway.
After all 15 jokes, the Blonde makes i…