Top Definition
someone who acts unselfishly and a makes sacrifices for the planet that might make other people think you have lost your marbles.
The other day as I was crawling into a greasy dumster to save a light fixture that still had some good bulbs, I thought,"Have I become a dumster diver?" ... then with a giddy feeling I crawled out and decided I am a huplanetarian!
by elle3000 May 17, 2010

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