To Curb: The act of "curbing". Slang for a horribly disgusting way of inflicting damage and/or causing death.

Without going into too much detail(rent American History X), curbing involves placing someones open mouth on the corner of a curb so that they are open jawed across the cement. You then stomp on the back of their head causeing their jaw to split open across the curb and killing said person.

One of the most horrible things imaginable that one person could do to another.

Saying such as "eat curb" bring thoughts to mind that one does NOT want to think.

This was used as a joke amongst some friends of mine at school. "Don't make me curb you" replaced "that was a stupid thought/action/comment/etc" as well as being used to threaten someone.
Don't ask....