If anyone flashes their lights in the left hand lane behind me, I always slow down to the speed limit. When they try to pass me, I speed back up. Yeah, I should probably let him by, but I hate flashing light people, especially if you're doing 80 in the left hand lane.
Twice already assholes in SUVs tried to run us off the roads. It's the most ENRAGING thing because there's nothing we can do. It's moments like that that if I had a gun, I'd shoot their fucking tires out.
edit: just as I was typing this, there was a road range incident right in front of me lol