I worked for O'Reillys for a while.
Customer: I need a water pump for a Chevy Silverado.
Me: Alright, what year, and is it a 1500, 2500, or a 3500?
Customer: It's a Silverado...
Me: Yeah I know, but what is it? A half ton, 3/4 ton, or a one ton pickup?
Customer: I just told you, it's a Silverado! You're not very smart, are you?
I walk outside with the customer, he shows me his truck, and I point to the emblem on the door.
Me: See that? Your truck is a 1500, that means half ton. You need a water pump for a Silverado 1500, more than likely a 5.3L engine, possibly a 5.7. What year is it?
Customer: I don't care if it's a 9500! I told you several times I need a water pump for a Chevy Silverado.
Me: Napa is just down the street, they can help you out.
You can tell I wasn't very enthusiastic about that job after being transferred to the parts counter.
1991 YJ: Daily Driver
1992 YJ: Pile of crap sitting in the garage.