I'm really upset at this guy and I'm having the urge to key his car.
Why would you be so mad to do that to them?
There's absolutely no reason, but it's an interesting & fun activity.
It's not okay to intentionally damage someone's car. I think of someone did that to you.
People dent and damage their own cars all the time.
It's their property, they could do whatever they want with it. If you do this you most likely will get in trouble with the law, I highly recommend not doing this.