I belong to another bike forum and have been a member for like 12 years. There are a surprising number of members who ride strapped or carry shit like big washers, marbles, or a padlock, etc., stuff to throw over their shoulders onto aggressive drivers windshields (technique learned from old school bikers). They've also perfected the technique for using armored gloves to knock mirrors off cars or how to use racing boots to dent up the side of a cage. I never did any of that shit. I've learned to ride semi aggressively but in a preventive/defensive manner. But, I feel that eggs on aggressive drivers too, as in "I'm gonna catch that fucker!" kind of a thing. I have a friend who when we were first getting to know each other told me how angry sportbike riders made her. She is as sweet as pie, too. She told me that when she sees a bike weaving in and out of traffic while she is stuck in her car, she feels like "Who the hell does he think he is?!?". She added that she wished she could block the path of a bike because she didn't want the rider to get ahead of her! I was like, Holy shit, that's fucking nuts! It makes sense to me now.
Drivers are envious or threatened by our speed and maneuverability, i.e. freedom. Remember the fireside conversation between Fonda and Nicholson in Easy Rider?
WTF is wrong with that kid?
