Theres rough idle, and theres rough idle

Years ago I went into Advance Auto to get wiper blades for my 93 Dakota. The first question the kid asked was "two or four wheel drive"? I just laughed and told him that the wipers couldn't tell the difference.
Oh boy now we can tell parts store stories! Okay here's one of my favorite ones....
I go in the Baxter's Auto Parts and I'm looking for a couple things and this new kid comes out all eager to help me LOL and I start with a couple easy things and he's a little confused then I say I need a four and a quarter inch Dingle ball hone? He goes- ah..ah.. I'M NEW HERE!.. LOL and ran for the front counter...lol..