I had one this morning. White van man who took exception to my turning right from the left hand lane. He would not let me merge and was hanging over the passenger side of his van effing and blinding. As its a nice day I had the sunroof open and waited for him to take a breath before, in the most condescending manner possible, asked him if he knew vehicles could turn right from that lane.

He looked amazed that someone would have the front to bring him up about it. I gave him a finger wiggle and drove off

He just sat there in a very slack jawed way.