insane people flock to me

I was driving, going the speed limit about a car length behind the car in front of me and the lady behind me is tailgating me. So much so that I can't even see her hood, all I see is her angry toothless face (sorry, I couldn't help it) and I raise my arms and shrug like "what do you want me to do?" and she flips me off! What the heck?! So the light turns and she gets in the lane next to me and rolls her window down and starts yelling at me! She had a kid in the front seat of the car and she was screaming and cursing up a storm. I made the international coo coo sign, you know finger around the ear. That made her even more angry! I thought she was going to jump out of her car! Insane.