I didn't do this, but I saw someone on my bus do it. My bus has to turn around at a gas station and theres always a bunch of 18 year olds standing there being stupid, so one of the kids on my bus balled up a piece of paper and threw it out the window at them and flicked them off. My bus driver dosen't care what we do so everyday you hear someone shout the F word really loud. And they have contests to see who can shout a certain piece of male atonomy the loudest.