Working in a bike shop is an interesting experience. You get to meet a lot of weirdos. We had this mentally ill guy that we would always dread showing up. One time, he had a breakdown and was yelling about how he couldn't take it anymore. Another time, some guys that seemed intent on robbing us came by but changed their minds when they saw how many of us were in the shop at the time. We were also all fingering cranksets and large wrenches.
Some kid came in with a MTB with its tires worn flat. He said he "liked to skid" and wanted tires that would last longer under such use. I sold him some Specialized Umma Gummas.
One fellow came in with a bike and a wheelset. At first, I didn't understand what he wanted but it turned out he wanted me to switch wheelsets for him. Yes, he had quick release skewers. Apparently, I did such a good job that he came back several times to have his wheels changed.
Another guy would remove wheels by unscrewing the nut and removing the QR completely.
One woman was wondering how to fit her bike in her car. It was a Camry that was a few years old. I told her to just put the seats down and she had no idea the seats could fold down.
I'm sure I'm forgetting some stories but those are what came to mind.