Of course, there's always the possibility that the car next to them was in two spaces before they arrived, so when they went for a spot they ended up paying forward somebody else's original sin.

more fun is to let the air out of all four of their tires. open the caps and use the end of your key. no damage to the car, but lots of inconvenience and a towing bill for the idiot.

@Rockpopstar: Not just “someone” but “everyone”. I hate to say that people like that have it coming, but they kinda do.  I wonder if the car is even dented or scratched? I would just leave the note on the windshield without causing any damage. Psychological torment can be satisfying, too.

My old girlfriend used to key expletives into cars parked in two spaces. That may seem like unjust punishment, but for some reason, the fact that she was a five foot, hundred pound little girl seemed to make it okay. And hilarious.