I had a young feller do a left turn from the right lane in front of me today .   I was in the left turn lane and he crossed three lanes to complete the turn before I did.  For my part the turn was super easy off a 5 lane road with about 75 degree of angle , I didn't even slow down from my 35 mph  roll in.  Till this car shows up from the right side out of no-where going into the same new lane as I was aimed for.   If I hadn't got on the front brake all the way then his front door might have bent my forks as I came into his car through the side window right on top of him.  
It made me mad at the time , he pulled over and stopped as I blew the horn and shouted something I shouldn't repeat at him !    
But
What can ya do with the idiots out there ???