I've been locked in a cupboard and had my back scratched (she was trying to grab me but missed) so hard it bled amongst other things. My old mate got tied to a chair and left there for a whole break time. One old school R.E. teacher used to throw a ball of chalk at kids heads if they were pissing about. Being made to do P.E. in your underwear, in highschool.

We almost certainly deserved it though.