Actually it was a piece of rebar. It was sticking out of one of those cement blocks you find at the end of parking spaces. I don't even know what they're called. Bumpers? Pylons?
Whatever. It ripped off my bumper.
I didn't do anything to that piece of rebar either! I don't even KNOW that piece of rebar OR its pylon buddy! It just attacked for no reason. My guess is it has some unresolved anger issues about not being part of a skyscraper or something.