Its entirely unfair to pose this question to a middle school teacher such as myself, seeing as I find untold ('til now) quantities of notes, clothing, and random what-nots on the floor, in the seats, near the garbage of my classroom. Today, I will share the most recent, though probably not the most bizzare, a note lingering near the bookcase:

"last night I had my retainer in and I guess I took it out sometime in the middle of the night. Then this morning I woke up with My retainer stuck in my hair...:} LOL haha"

Nice that this individual felt comfortable enough to share these details with the entire internet...