I think that one of the funniest things I've ever seen was when I changed my shell application. One of the kids tried to use the computer and was completely befuddled by the lack of desktop icons and the usual taskbar.
I usually have a good grasp on what I do and don't know, and I'm quick to ask "What the hell are you talking about?" when I don't know. I'm always happy to answer when someone asks the same of me.
