The word used to describe one's feeling of being hungover after a night of heavy drinking, when all seems to be in a way that could have been, and perhaps should have been, but in fact all is in such a way of which it once was.
Can also describe how one feels if not washing for a while.
Some Scooby Doo cast member pulls off the mask of the monster and some random person that appeared in the episode's face is revealed. He then shouts, "And I would have gotten away with it too, if it weren't for you meddling kids"