I have a 94 Ford Thunderbird as my daily driver. The car was driving like I had bad miss in it and had given it a tune up about a year ago. I check it and I find out I have a bad spark plug wire. I remove the cap and rotor and its all gunked up. So I go on my way to the parts store. I stop over at Advanced Auto to pick the stuff up. Tell the kid at the counter that I want a set of spark plug wires, distributor cap and rotor for a 3.8 liter. He then starts looking the stuff up and then to my amazement asks me if the motor was distributor less? I look at him like he has three heads and I state "Well I wouldn't be asking for a distributor cap if it didn't have a distributor". The he says that he didn't have the wires in stock. So I just said never mind and left and went over to Auto Zone. Not like they are any better but they had everything in stock. When I was leaving with my son I just chuckled about the whole thing. I never gave the kid an attitude just had a smile on my face the whole time laughing inside.
I have nothing against anyone who works there but if you're working at a parts store you should have some basic knowledge on cars / parts.