I have a cousin who works for a repair ship. Two of my favorite stories:
#1)
Woman calls in and says she has a problem with her Pontiac (pronounced like
gooooooo-lee. My cousin knows how to fix the problem, but doesn't know the car, and asks her to bring it in. It was a Pontiac 6000 LE.
#2)
Woman comes in with her car because one of her taillights is half-full with fluid. My cousin tells her that it's blinker fluid...it's not that the taillight is filling with liquid...it's that it's half-empty. He tells her that it's kinda expensive to fix, and offers, because she's a repeat customer, to simply refill it for her for free whenever she notices it gets low. Sure enough, every couple of months, she comes in, he puts water into a random empty container, and refills her blinker fluid, and they get a good laugh. After about 6 months or so, apparently she stopped coming in. No idea if she moved, sold the car, died, or figured it out (maybe someone told her) but man...hilarious.