Probably credit card. Or I've been working on this plan
So, locate the NB admins+.
Next, bring a weapon and tell them this:
I wrote on a troll thread.
Immediately, they should log on to NB and start giving out infractions.
Next: DO THIS PRECISELY.
Aim directly for their head.. slowly aim, perfect and steady. Then..
THROW IT. THROW IT. PICK IT UP AND THROW IT. THROW IT.
When they get knocked out, memorize all of the info and if they have a good computer. take it.
Then kill yourself (not shown to be offensive btw, you're a good guy

)
Edit: But its probably still a credit card.