Top Definition
a festival of sorts where noble men(and women) gather and drink excessive amounts of alcohol or beer, or both
-hey man you ready for the tankfest at daves?

yeah man we are going to get fucking plastered!

-dude we need or organize a tankfest this weekend..
yeah sounds good where should we host such an activity?

-(on phone) dude get to so and so's house its a goddamn tankfest!

-man last nights tankfest was fucking bonkers. i think i blew chunks like 6 times.
by dahmerrr January 17, 2010
To get drunk as shit as to grow a beer belly.
Hey dude wanna Tankfest tonight?
by Hassin August 26, 2003
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