Guys at the shows and cruises are really rude

I had a chevelle guy that leaned on my 64 Sport Fury. I asked him not to, and he walked away quickly. About a year or so later, I saw him leaning on it again. I told him if he did it again, I was going to climb all over his trunk. He also came up to me at the end of a car show ranting because he didn't get a trophy for his chevelle, but I did.What an ***.