Alcohol definitely changes a person. My husband has the tendency to get angry and argumentative. He has had to quit for this reason. I would get plain silly, but never mean. I have a friend who assaulted a police officer not too long ago as a result of being too drunk. She even hit the bartender. While she has always had a temper, alcohol brought out the worst in her. She's been sober several months now. It affects everybody differently.