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1.
A Guinness Man is a man who predominantly drinks Guinness above all other pint options.

He will sometimes drink lager, but more often than not he'll go for a Guinness.

A Guinness Woman demonstrates the same traits as a Guinness Man, but she is female.
Man one: I'm heading to the bar, lager?

Man two: No thanks, I'm a Guinness Man.
by rormcgror October 10, 2013