Verb. To williamsburn. To unimaginatively pour scorn on a hipster, Brooklynite, or otherwise scrumptiously dressed individual. Also used to lazily mock situations, places where these people are likely to be found.
Me: Look at that guy. All he's missing is a set of bellows and an old-timey dive helmet. Other: Williamsburn! He has an anchor tattoo and dog. Get over yourself.