I usually ignore them. I haven't had to deal with it since I bought the car. But last week I had one on my way to work, I was just trying to get in my lane to prepare to turn off. Once I did there was a Tacoma in the lane to my right. I wasn't paying much attention to him until I realized we were at matched speeds and then I heard...3 honks and he took off. I'm just like DAH FAHK!?!?!
Last night though I'm embarrassed to say I accepted the challenge to some high school twinks in a Ford Focus at a stop light. I have no idea why I did it but I did and that will be the last time.