I once had a professor with what was VERY close to (but not entirely) a Chaplin/Hitler mustache. Somedays he would remind me of Hitler, and other days Chaplin. This leads me to believe that sort of mustache has a 50% percent chance of reminding any given person of Chaplin or a 50% chance of reminding them of Hitler. My theory goes on to assume the chances lean slighter more toward Chaplin if the person was in a good mood and slightly more toward Hitler if the person was in a dark mood, but I never attempted to test this theory, so it could be bunk. Yes, it was a boring class and I had plenty of time to think about these sort of things.