http://uk.answers.yahoo.com/question/index;_ylt=Ao8J7psI3Q_tHnCmWI458oYgBgx.;_ylv=3?qid=20120209134313AAjIWbL
Slamming another kids head into a locker and shutting the door is a very bad thing to do and should be avoided at all costs. There are much better ways to deal with annoying kids.
Pushing them down a flight of stairs is very effective you can then take pictures of his broken limbs and all the blood and then post them on the internet., holding his head in the toilet and repeatedly flushing it is great especially if the toilet is foul and dirty and of course this does not get too dirty with blood and stuff. Slamming his head into a wall can produce lots of blood and black eyes.