Three expectant mothers were sitting in the obstetricians waiting room. Two of the ladies began to chat about their pregnancies, and their due dates and such.



One of the women said to the other, "I happen to know that my baby is going to be a boy, because when my baby was conceived, my husband was on top."



Replied the other woman, "Oh! That must mean that Im going to have a girl, because when my baby was conceived, I was on top."



The third woman suddenly burst noisily into tears. Concerned, the other two ladies turned to her and asked, "My heavens, what ever is wrong?"



The third woman wailed tearfully, "Im afraid that I may be having a puppy!"