Ok, so a blonde, a brunette, and a readhead are all sitting the OB/GYN office, discussing women issues. The brunette is called in to the docs office, and a while later comes out grinning. She goes up to the other girls and tell them that the doc said she was going to have a baby girl, since she was on top when she conceived. They all hug and such.
The redhead goes in, and when she comes out smiling, tells the others the doc said she was going to have a baby boy, because she was on bottom when she conceived. They hug, then look back at the blonde, who by this time was in tears. They go to comfort her, and ask why she is so upset. The blonde looks up and whimpers " I'm gonna have a puppy!"