Top Definition
Fangenius is just as it's root words defines.
"fan" for fantastic and "genius" for genius.

It was created as a need to evolve from simply responding "genius" to things said that you like. Genius was simply not enough and the need to express how fantastic something was naturally spawned the evolution.

I coined this phrase back in 1997....
i have heard it uttered loosely from people's lips.

i think it's time to spread how fangenius of a word it actually is.
wow you are fangenius.

The creator of this word is not fangenius, he just has too much time on his hand. you however....are fangenius....just look at you.
by The Kranz May 05, 2010

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