Originating in Richmond, BC, it is a celebration held in January where adults get together after the busy Christmas Holiday season and drink & eat completely way too much. Often times there will be vomiting, noise complaints and ridiculous drunken shenanigans. Every year there is different theme.
1. An adjective to describe a state of uncontrollable euphoria reached from getting crunk. Usually one being crunknasty occurs at the pinnacle of one's drinking.