The first time I accidentally hit the insert key on my computer, it messed me up for something like an hour. I thought I was going to need a new computer, or at least to reinstall the OS to fix it.
My third car was the first one I ever owned that wouldn’t start unless you pressed in the clutch. For days I was convinced that there was something wrong with the car, because sometimes it just wouldn’t start. The clutch situation was eventually explained to me by a mechanic. He was not particularly nice about it.