I would certainly hope you'd get fired.....an adult fighting is very childish, shows immaturity, and inability to control themselves during stressful situations..... Add the fact of driving a truck, heavy traffic, road rage, etc. I would not want a violent, angry, aggressive person walking to my front porch, where I have to tell him "sorry, I don't want it, send it back." Or walk, at a pedestrian crosswalk, while he impatiently feels like he has every right to mow me down cause he's having a "bad day" cause his supervisor told him he's 'too slow.' Violent people shouldn't be in the service industry. Perhaps you should take up boxing, or the military......something other then driving a truck in residential areas, where you may have to interact with customers.