I guess I'm not a fan of your work. I thought it led up to a good punchline. It's nice to have a lot of fine details. It did look pretty silly, though. Obviously, this wasn't meant to be taken too seriously. I guess it should have been longer.
I do like how it builds up on itself, though. The voices aren't bad. School violence isn't funny! I just thought this was passable. You draw pretty funny noses.