Excessive horn beeping is one of my pet peeves. It rarely accomplishes what people want it to and being a constantly rude and aggressive horn blower probably lands people on the "you're going to get poo'ed on" karmic list.
I was in front of a woman a few days ago who decided that she needed to hit the horn whenever it took me more than 2 seconds to move forward. There was an accident just up the road. She couldn't have missed it--there were police and ambulance lights flashing ahead of us. The police were just beginning to reroute traffic around the accident, so I hesitated when the light turned green, to see where I was going to need to go. "Horn blower" gave me a little beep. Ok, fine. Maybe she didn't see the big, bright yellow ambulance ahead
So I start going slowly and have to come to a stop while the car ahead of me inches around the accident. We are literally A FEW FEET from the accident...yet she honks her horn AGAIN when I can't move forward because of the accident.
I have a pretty notable level of road rage, but it is largely limited to using very unladylike language in the privacy of my vehicle.
I don't hit the horn often, nor do I flick people off, or get out of my car to threaten people, etc. But when that lady hit her horn the second or third time, I was tempted to stick my head out of the window and advise her to pull her head and horn out of her butt and give me a second while those of us ahead of her try to avoid causing ANOTHER accident!