The name of the thread is "Craziest thing in school i could do?" you can't back off when he suggests something crazy.
One of the craziest things to do would be to strap a bomb to yourself and start screaming things about the second coming of Christ. Then, when people start gathering around to gawk at your incredible preaching abilities, blow yourself up.
Wait, better yet, keep everything i said before, but before you get to school, kidnap a child (preferably kindergarten or first grade). Bring him with you and make sure you tell him what will happen if he tries to get away (you'll kill his/her parents). Continue with what i said before, but in the middle of your preaching, grab the kid by the neck and rip his throat out, and start making love to the hole you just ripped as he bleeds to death. When teachers try to stop you, blow everyone up, including yourself.
By the way, if you decide to try this, don't hold me accountable. I'm not endorsing this type of behavior, I'm just saying that is one crazy thing to do!