Don't judge a book by its cover. Or, how about, don't judge anyone or stereotype at all. We're all unique individuals with unique experiences to bring to the table, someone's appearance doesn't tell you much about what those experiences are. In this story this scammer mechanic completely underestimated his customer because he deemed her to be an easy target, expecting a small blonde woman not to know all that much about cars. The thing is, both her brother and father are mechanics and she knows…