I was followed by an individual who had turned on his brights. He politely turned them off for oncoming traffic, then turned them back on when passed. Apparently, he does not understand that brights do not merely blind oncoming traffic, but also the individual who is in front of you going the same direction.
He is currently on my list of people I do not really like right now. If only I could see him. I'd let him know about my list.