Ben Schott does the best NYTimes Op-Arts, thought I think his previous entries had actual art… In any case, here are a whole bunch of NY cocktail bars sharing slang that’s either unique to them, or common in the world of bartending. My favorite is “Boomerang”.
A specially prepared drink that is sealed (say with plastic wrap or a rubber glove) and dispatched as a gift to a nearby bar. Of dubious legality, Boomerangs are a way of “having a drink” with industry friends during work. Boomerangs are often shuttled from bar to bar by regulars, who are thereby identified as guests of quality.