I scream, curse, and flip everyone off. I have had people run up to me(as I head into my destination) just to call me I bitch. I usually tell them that they have me confused with someone who gives a shit. Or, I simply say "Your point?".
I used to live in wisconsin, so I know you can get away with that ridiculous behavior there. Try that anywhere else and at the very least your tires will be flattened and your car
will be 'keyed' At the worst you could lose your life from a road rage incident.
Best of luck to you.