I remember back in middle school for the first like 2 weeks of soccer I never brought the right socks to the match. If we were supposed to wear white id bring red and vice versa, heck sometimes I brought one of each. In highschool I didn't realize you were supposed to catch the soccer bus at the front of the school instead of the back where the regular busses are until my coach finally got pissed at me missing so many practices.
I remember one time in Latin class I was doing my usual zone out routine during a lecture, so being the smart ass that I am I decided it would be a great idea to break my pen in half just like a pencil.... lets just say that the kids halfway across the room were not very appreciative of having ink splattered in their face while trying to listen.
As an aside I remember one time in an English class this girl just burst up mumbling what appeared to be gibberish and heading towards the door, as she was rounding the desks to get to the door you could see the ink dripping from her face to the floor