You know what? The guy's motive for sitting in his car is none of your fucking business. If you wanted his space and you had been sitting there for a while, you could've honked. Being that you said you claimed you honked, the music might have been on, or he didn't realize that it was you honking, or he might not have even known you were there at all. Then you could've just tapped on his glass and asked nicely if he was leaving.
You can't be that tough considering you are afraid of 0 degree weather and have to wait till the guy's gone before keying his car. Why didn't you just hop out and key it right away?
Fucking pussy teenage angst ridden tough guy bullshit.
Fuck you.