A blonde, a redhead and a brunette were at the gynecologist having pre-natal checkups The doctor asked the redhead
"In what position was the baby conceived ?"
"He was on top ", she replied.
"You will have a boy !" the doctor exclaimed.
The brunette was asked the same question.
"I was on top ", was the reply.
"you will have a baby girl." said the doctor.
With this, the blonde burst into tears.
"What's the matter ?" asked the doc.
"Am I going to have puppies ?"