Refers to doubling anything up however in this context it specifically refers to either drinks or girls.
"Man its about time I get this girl and Dub er up"
Guy 1 says "What are you doing tonight?"
Guy 2 says "Dubbin er up with a dub er in hand"
Guy 1 says "What are you doing tonight?"
Guy 2 says "Dubbin er up with a dub er in hand"
by Blazer321 February 4, 2010
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