1 definition by BevDistrict

A slang term that originated from a group of teenagers under the influence of a large amount of marijuana who had overly positive events happen while they were high that they unknowingly thought of a new trendy way to say when they approved of something.
Marc: the Gatorade machine just gave me 2 gatorades
Alex: Mad Nice Yo !
by BevDistrict November 2, 2011
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