Kumagai is Japanese for "Bear Valley" and is also the name of a cross-dimension killing game.
Person: yo have you heard of Kumagai?
Person 2: the bear valley or the killing game?
by Monokako March 15, 2021
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Slang for doing weed
Ryan: Julie this isn't what Kumagai means don't put this in the urban dictionary
by Monokako March 15, 2021
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