Ever notice how you can often tell who's been on the system by the file names (typically in /tmp on UNIX)?

I'm a foo/bar/fubar user, having learned that from one of my first co-workers almost 20 years ago. He gave me the WWII explanation for their names and I've been using them ever since. Another guy there used names from The Flintstones, so we always knew he'd been busy when we found fred, barney, and wilma files laying around. A few other guys were Three Stooges fans, etc. What's funny is that years later when these guys give me examples of how to do something they always use the name space I know them for.