710

A blonde goes into the local auto parts store and asks for a seven ten cap.

All the guys look at each other and say, "What's a seven ten cap?"

She says, "You know, it's right on the engine. Mine got lost somehow and I need a new one."

"What kind of a car is it on?" they ask, thinking maybe an old Datsun Seven Ten, but no, she says it's a Buick. "Okay lady, how big is it?" She makes a circle with her hands about 3-1/2 inches in diameter. "What does it do?" they ask.

She says, "I don't know, but it has always been there."

One of the guys gives her a notepad and asks her if she could draw a picture of it. So she makes a circle about 3-1/2 inches in diameter and in the center she writes 710.

The guys behind the counter look at it upside down as she writes it... and they just fall down behind the counter laughing hysterically.

(Draw a circle, write 710 in the middle of it, and turn it around.)