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1.
japanese for "something"
nanika tabemasuka? = (would you like) something (to) eat
by Darkness545454 May 27, 2008
 
2.
A bandit, who is often times in possesion of an illegal substance and/or something stolen. Also a person who accepts really stupid dares.
OMG! Look the police just caught a nanika!

I cant believe you just streaked across the freeway, you're such a nanika!
by BannanaMonkey July 25, 2008