1 definition by Kirsten Elizabeth

Top Definition
The activity consisting of being held upside down submerged in a garbage can full of water for as long as one can hold ones breath. Once one has been put back to the standing position, the person has to bong a beer. its a rush but quite fun. Usually done at frat parties.
Did you see those two hott girls just do that dunk-a-roo? They are fucking awsome!
by Kirsten Elizabeth August 25, 2006

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