I took this from Legend's other site, and it was really fun so I thought I'd put it here.
Basically we... ban the user above us (or the user who replied before us - same thing).
So for example, Kuro replied to this topic saying... "Banned for making the topic!"
And then Shiro replied, "Banned Kuro for replying to this thread."
Or whatever. The banning reasons can be anything, but nothing vulgar please. :D