It was the last day of class, and we had all just finished the exam. So me and a friend made a bunch of paper airplanes, and the whole class just started throwing them around the room. It got way out of hand. Well, at the end of class (the teacher was gone, we had a proctor), my friend and I decided to leave all of the paper airplanes on the teacher's desk as revenge for all of her stupid shit that year. We even stapled a couple to her calendar. Now, if this wasn't bad enough, a lot of the paper airplanes had stuff written on them, including a swastika, "Al Quaeda Air Force," and there was even a cone-shaped one named "The Penetrator." It may not sound that funny, but being there was hilarious.