So of course, the solution is to write about it on a forum. What happened was I've been slaving away in the bedroom the whole day, and I thought to clear my head by taking a drive around the block. While I was waiting for traffic before I made a right turn, an old man from the other side of the road was starting to cross the the street. He got annoyed because I was in his way, so while he was circling my car he also pounded on it. Obviously he'd also been having a bad day, but I was unable to let it go. I'm not a confrontational person and normally I would've let it go, but this time I just couldn't. So I ended up yelling at the old man and giving him the finger. Would've followed him home to TP his house, too, if only I didn't still have a lot of work to do at home. ...just out of curiosity, is pounding on someone else's car technically illegal or is it just bad manner that makes said car owner mad?