Why? flipstyle ended up doing the same thing back to him.
If someone acts like an ass, let them. Do what you can to get away from him. Besides, as per your description, you were driving in the left lane. I HATE that. Unless you are passing another car or making an exit that's on the left, you should be in the center lane or right lane.
If someone acts like a dick and you return volley, you're no better than he/she is. Be the bigger man and let it go.
trust me, if u were on my situation where u get cut off twice and almost getting into an accident, ud do the same
trust me, I would not.