What are the 'Bar Drink Code' meanings?

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Okay so I have no clue about the whole thing, all I know is that champaign is for celebrations. Can you please give me a long list of the various bar drinks/alcoholic beverage codes/meanings because I'm going to try something out with some people to see if they know of it also. I tried to research a bunch of them but it's just giving me all these definitions instead of their code.