Adult Temper Tantrums
When a grown man gets all pissed off and starts throwing things or punching walls, I want to shoot myself. I can't think of anything more retarted. Seriously.
The thing is, they don't do it when they're alone. They do it in plain sight, or they're loud enough so that someone will turn around and pay attention to their temper tantrum.
I have no patience for reactionaries.