one day on friday the 13th a blonde and a brunette are...

one day on friday the 13th a blonde and a brunette are on a boat leaning over the rails looking at the water. All of a sudden the brunette loses her balence and falls over the side of the boat. She is hanging onto the rail and the blonde is just standing there not helping. Eventually the brunette loses her grip and drowns. Once the blonde dies of old age they run into each other in heavan. The brunette asks "why didnt you save me" the blonde says "cause it was friday the 13th and your suposed to have bad luck,duh