A blonde, a brunette, and a redhead were sitting in a resturaunt having lunch one day. They were all pregnant. The brunette says "Well, I KNOW I'm having a boy because I was on the bottom." The redhead says "Well, I KNOW I'm having a girl because I was on top." The blonde gets this really worried look on her face and the other two ask her what's wrong and she howls "Oh Sh!t! I'm having puppies!!"