Being overly loud or obnoxious in a public place (i.e., a lobby of a bank, doctor's office, the DMV, etc.) - even if you are laughing with a friend or being "friendly" with the receptionist or something - is not a sign of your overwhelmingly positive nature or good spirit ... it's a character flaw that demonstrates a ridiculously oblivious nature and self-centered attitude. The types of jolly old idiots who sit through a short green light because they were laughing with the person in the front seat, and then they speed through the intersection as it turns yellow, if you will.
You would hate Cajun country.