A blonde, brunette, and a redhead are sitting in the waiting area of their obgyn. The three ladies start to chat it up and whether they will have a boy or a girl... The brunette:
"I know I'm having a boy because I was on top!"
The two others smile and... The redhead says:
"I know I'm going to have a girl because I was on the bottom!" The brunette slightly giggles for a moment and suddenly she and the redhead look at the blonde and ask... "Why are you crying?"
"I think I'm going to have a puppy!"