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Drinking a large quantity of adult beverages and succumbing to the urge to urinate.
Once I tap the keg, I have to pee after every beer.
by Apocalyptimaniac September 24, 2005
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2
To drink large quantities of alcoholic beverages, especially at frat house parties.
How to Tap the Keg and Master a Perfect Pour.

Let's tap the keg tonight and party.
by Timmington September 23, 2010
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3
to fuck a fat bitch. most often occurs after a night of heavy drinking when either the beer has impared your judgment or desperation to get your dick wet has set in.
that bitch is so fat she looks like a keg with legs, why don't you go tap the keg
by Weigel June 28, 2005
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4
Man, all of that lemonade makes me want to tap the keg again.
by Steve September 11, 2003
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