This is a "blonde joke" that someone sent to me in an e-mail...
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." She replied that she did not know what it was, 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, it's right there!" (open attachment above)