A blonde, a brunette, and a red head who were all pregnant, were sitting around talking one night.
The brunette says "I'm going to have a girl".
The blonde asks "How do you know?".
The brunette replies "I was on top".
The red head says "I'm having a boy, I was on the bottom".
The blonde starts to cry. The other two ask her whats wrong. Sobbing, she says "I'm going to have puppies"