A blonde lady goes into an auto parts store and asks for a seven-ten cap.
All the clerks look at each other, and one says, "What's a seven-ten cap?"
She says, "You know, it's right on the engine. Mine got lost and some how and I need a new one."
"What kind of a car is it on?" the clerk asked.
"It's a Toyota."
"Okay lady, how big is it?"
She makes a circle with her hands about 3 1/2 inches in diameter.
The clerk asks, "What does it do?"
"I don't know, but its always been there."
By now, the manager has come over. He hands the lady a note pad and asks her if she could draw a picture of it.
The customer carefully draws a circle about 3 1/2 inches in diameter. In the center she writes "710."
The guys behind the counter, who are looking at the drawing upside down, can barely control their laughter as the boss walks to a shelf, grabs an OIL cap and puts in on the counter.
"That's it!" the lady says. "How much?"
"It's on the house," the manager replied. "Please come back often. You have no idea how entertaining it was waiting on you."