Hi, excuse me. My name is Neal. You don't know me, well sort of. I was beside you and then behind you in traffic. I drive a Toyota Tercel. It's grey.
So?
So anyway, you were kind of being a dick and keeping me from getting over and when the guy behind you finally let me over, I gave him the courtesy wave and then you waved back.
So?
So that wave wasn't meant for you. You were being a dick. I'd like to get that wave back from you. You see, you didn't really earn a wave. In fact, I probably should have flipped you off.
No way dude. I'm keeping your courtesy wave and there's nothing you can do about it. Mwa-ha-ha!