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1.
A small alien inhabitant of the planet furon they have mind powers and appear in the games destroy all humans
look at that little alien hes a furon
by Bigboff June 25, 2009
 
2.
A vicious spiteful person, usually appearing harmless and timid until agitated.
He attacked as if releasing the rage of a Furon.
by M. B. September 10, 2007