While driving north on the 5, up in Oregon, it wasn't the finger that I got, I got the whole frigging moon! Yeah, an itty-bitty car with three ~20 year old guys, and I saw the moon from the guy in back. It was actually pretty funny. My wife and I laughed quite a bit about that one.
I didn't get mad, I think a hardy thumbs up actually can be more irritating to them than sinking to their level. Besides, the one time that I actually did try to swerve to "scare the be Jesus" out of the other guy, caused serious complications with me (many years ago, not in the H2, and I have grown up since then. At least, I like to think so.
).