Noun, originating somewhere in the Pacific Northwest. A girl who is superlatively awesome, exerting her superiority wherever she goes (but in a non-pretentious manner; more of a transcendent, aloof hipness). Possible association with "terminator," though in an innocuous (not lethal) sense.
Alternately: An enigmatic and delightful person.
Partygoers felt keenly aware of their superficiality when a janinator walked into the room.
Anythingmade in Japan then exported. Usually comes in a box.
Wirimu: Look what I stole from the shop for my Honda bro,
Pripi: Cool as cuzy a Japinabox, is it da bomb cuz?
Wirimu: Dont know cant read Japanese bro.