three women were sitting in the waiting room of the obstetrician office: a redhead, brunette, and a blonde. all three women were expecting their first child.

the doctor comes out and asks the redhead "what sexual position was the child conceived in?", the redhead said "missionary", the doctor tells her she will have a boy.

he goes to the brunette and asks the same question and she replies "on top". the doctor says "you will have a girl"

the blonde then starts to sob, when the doctor asked her what was wrong the blonde asked "does this mean i'm going to have puppies?"