A blonde, a brunette and a redhead are in the obstetrician's office. The redhead and the brunette are talking. I understand that the position you are in at the time of conception helps determine the sex of the baby says the brunette. I was on top, so I'm going to have a little boy. Oh says the redhead, I was on the bottom, so I must be having a little girl. The blonde bursts into tears. What's wrong the redhead and brunette ask. OOOHHH says the blonde, I'M GOING TO HAVE PUPPIES!