Don't flip me off

This morning, while driving, I approached an intersection in a nice neighborhood and a car was inching  into the road past a stop sign where I was turning left.  Since I had the right of way (which obviously means nothing here) I kept turning and so did the other car--and I noticed the woman was flipping me off.  I continued to turn left in front of her and she continued to drive trying to cut me off.  I stopped my car and rolled down my window.  She screamed at me, "I WAS HERE FIRST!"  (What?  Is she 5 years old?)  I was SO mad I yelled back at her, "IT DOESN'T MATTER--YOU HAVE A STOP SIGN."  I can't even remember what she yelled back at me but then I yelled (I know; I'm so mature...), "LEARN HOW TO DRIVE."  Good thing I got the last YELL in.