The worst thing you've ever done...

[Zyx]

I attempted to hit my friend in the head with a two-by-four but missed and hit him in the neck. Hit another friend in the back of the head with my back packwhich had a bunch of books and binders and such in it. I probably could've given him a concussion. And then I stabbed another friend in the hand twice with a pencil.

First: don't regret
Second: especially don't regret (he deserved it)
Third: I regret that, he did nothing worth getting stabbed over.