A blonde, brunette and a redhead, all good friends are each 3 months pregnant.

The redhead comes out with, "I抦 having a baby boy".The blonde asks, "How do you know that"

The redhead says, "When we were having sex, I was on top"

The brunette then says "Than I must be having a baby girl, since I was on the bottom when we were having sex"

The blonde begins to cry uncontrollably. Both friends ask why she is so upset.

I抦 going to have puppies"