Moving from the Big City, to a rural location definitely taught me to never judge a book by it's cover. Early on, we had a a local good ol' boy come to take down a couple of trees. This guy looked nearly homeless, beard down to his mid chest, dirty, beat up old truck, grungy old overalls. His family has lived here for generations. I found out in a conversation with him that he knows more about classical music than I did and I was a professional "classical" musician my entire life! I was blown away by his knowledge.
You just never know with the real person behind that facade is all about.