A few days ago I was having some work done at my local garage. A
blonde came in and asked for a 710 .
We all looked at each other and another customer asked, "What is
a 710 ?"
She replied, "You know, the little piece in the middle of the
engine, I have lost it and need a new one.." She said that she did not
know exactly what it was, but this piece had always been there.
The mechanic 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."
If you're not sure what a 710 is Click Here
http://www.hotautoweb.com/cogifs/710.jpg