A friend of mine (Dave) told me this story over the summer, and swore up and down that it's true (he says he witnessed it). It sounds a little far-fetched, but is amusing nonetheless.
Here's the story:
Dave was standing in the parking lot of a 7-11 store when this guy walked out of the store with a six pack (of beer he assumed) in a brown paper sack. The guy walked between two cars and when he did, the bag lightly touched one of the cars. As it turned out, a guy and his girlfriend were sitting in the car, and the boyfriend (trying to impress his girlfriend) got out of the car and started bitching at this beer-guy for scratching his car. So the beer-guy apologized but the boyfriend kept on ranting. After a while, the beer-guy said, "If it'll make you feel any better, go over and kick a few dents in my truck" and pointed to a beat up pickup truck across the parking lot.
So the boyfriend went over and started kicking the door of the truck in when another guy walked out of the store and screamed, "What are you doing to my truck???" The boyfriend said, "That guy over there told me that this was his truck" and when he turned around to look at the beer-guy, he saw him driving off in his car.