I know you probably meant that as a diss on vim, but for a long time that was the only vim command I knew. I felt more comfortable exploring files in editors and vim was the only editor available on the servers. The first two dozen times, I had to google the :q!

Partially a diss, partially as if it's the default editor it'll open with no clear indication of how to actually quit it in certain circumstances. I had to do the same thing repeatedly when I first encountered it.

Actually, that may not be a frequently asked question, given that vim tells you how to quit on the starting page, as well as when you press control-C.