There were 3 pregnant ladies in the doctor's waiting room -- a redhead, a brunette, and a blonde. They're all talking about their pregnancy and how it's going when the redhead said: "I know I'm having a girl." The others asked how she knew that when she replied "Because when we did it, I was on top and everyone knows that's when you get a girl". Then the brunette says "Well, I'm having a boy, then. Because I was on the bottom". They both turn to the blonde who's bawling her eyes out. They say "Hon, what's the matter??" When she wails "I'm having puppies!!!!!"