Several times--people loudly and insultingly insisting I'm supposed to ride on the right side of a turn lane onto a freeway entrance. One time a guy honked at me because he had to move over a lane to go straight and I gave him the finger. As is often the case, we both ended up waiting at the red light 50 feet up the road (my right lane position literally didn't slow him for one second). He of course rolls down his window and says "if I didn't see you, you could've been killed, you moron!" Needless to say, I gave him an expletive-laden lecture on state law and ignorant drivers. As is my practice, I generally try to appear dangerously crazy so people regret doing that sort of thing. I play nuts very well.