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The forced expulsion of the contents of one's stomach onto oneself, usually after imbibing huge quantities of alcohol, followed by abrupt and unannounced contact with random individuals in the vicinity.
Did you hear what Guy did up at his place in Boston this past weekend? He drank one too many pina coladas and proceeded to vomikaze everyone else there. GROSS.
by belovedpeace July 25, 2011
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