What is a 710??????

A few days ago a mechanic was having some work done at his garage. A blonde came in and asked for a seven-hundred- ten.

All the mechanics there 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 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 a car just like hers which had its hood up and asked 'is there a 710 on this car?'.

She pointed and said, 'Of course, its right there.' the mechanic fainted

If you're not sure what a 710 is ...................
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WOMAN DRIVERS.......Good for a laugh....
Okay guys you can stop laughing now!!