Three pregnant women are sitting in the OB/GYN office waiting to see the
doctor for their checkups.

In the course of their conversation, one of
the women says, "I'm so happy that I'm going to have a boy!"

The second
women asks, "How do you know it will be a boy?"

She replies, "Because I
was laying on my back when the baby was conceived."

The second woman
exclaims happily, "That's wonderful! That means I'm going to have a girl
because I was on top when the baby was conceived!"

The third woman
promptly bursts into tears.

She says, "OH NO!!! That means I'm going to
have a puppy!!"