That sucks dude, hopefully it will all come off. I don't get why people do this short of stuff, and they think it's funny. A few months ago, my wife took my truck to visit her parents in Michigan. Ended up parking on the street because they already had 4 cars in the driveway. Someone at some point either clipped my driver side mirror with their mirror or, hit it with some kind of object (my guess is a bat). I'm thinking someone did it on purpose, just by looking how the glass was broken, I was so pissed!