i vote on bird poop too. it looks nasty but glad it washed off with out leaving any scratches in the paint.
quick story.. one day i was driving on the highway on my way home from the beach and some guys in the lane next to me were "hollering" so i rolled up my window and sped up. freaking idiots decided to speed up and throw a gatorade bottle at my car. I WAS PISSED. and i have a nice little dent to show for it. people really have no respect for other peoples property.