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Another name for a Guinness (Irish Dry Stout).
Let's head down to the pub for a black doctor. The Black Doctor is the best cure for a hangover.
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by Le Grand Cheval March 15, 2017
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2
Another name for Coca-Cola when drank after a heavy night of drinking.
"Man I'm so hungover I think only the black doctor will settle my stomach"
by Jo Bloggs III May 05, 2012
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