I ran across this video and think that it is rather funny:
https://www.youtube.com/watch?v=5Qj8p-PEwbI
OTOH, a lot of people I have helped with their computers were not even aware what an operating system is, much less that there more then just the Mac and Windows OSs. Yes I know it is old news, but when I first heard about this some years ago I thought it was something from the Onion. Now I find out it is true.
Now I'm wondering just how many times this sort of thing has happen and we just don't hear about it?