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, 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 it hood up and asked, "Is there a 710 on this car?" She pointed and said, "Of course, its right there."

Too see what she is talking about and see the "710",  place the cursor over the bird below!