What Position?

There were three women who were at the gynecologist having pre-natal checkups.

The doctor asked the first woman "in what position was the baby conceived?". "He was on top ", she replied. "You will have a boy!" the doctor exclaimed.

The second woman was asked the same question. "I was on top ", was the reply. "You will have a baby girl. " said the doctor.

With this, the third women, a blonde, burst into tears. "What's the matter?" asked the doc.

"Am I going to have puppies?”