At first they didn't realize the girl was with someone. So they hootin. Then, they realize girl is with someone, and pay a complient. This is an act of respect. A means to attone. OP, angry, flips them off. They get livid. Unless i'm missing something. A person (op) might attempt to cool the situtation by apologizing, and maybe, make a couple acquantences. Instead, he's paranoid, and reliving the moments.