A few days ago I was having some work done at my local
garage. A blonde came in and asked for a Seven-hundred-ten.

We all looked at each other and another customer asked, "What is a
seven-hundred-ten?" She replied, "You know, the little piece in the middle
of the engine, I have lost it and need a new one."
"What does it do?" we asked her.

She replied that she did not know, but this piece had always been there.

He gave her a piece of paper and a pen and asked her to draw what the piece
looked like.

She drew a circle and in the middle of it wrote 710.

He then took her over to another car, which had its hood up and asked, "Is
there a 710 on this car?"
She pointed and said, "Of course, its right there."


Look at picture of the "Seven-hundred-ten"....