Origins - possibly comes from "mean" but there's rumour that "ment" was a seventeenth century dialect word meaning "foul smelling"
example: "Hurry up you ment putter!"
A sarcastic condemnation for a perceived urban extreme, but most often in playful support.
Peter: "Oh, I'm biking over to city hall."
Drew: "Dude, not cool. That's really 'ment."