Top Definition
Is the term used to describe someone, who often acts a little oddly with dumbed down behavior, they are quirky and fun and bring constant amuesment to other people.

Everybody loves a Derpnut and wouldn't have them any other way.

I myself, am a Derpnut and want this word to grow, show other Derpnut's, that we are awesome!
Person A "Ha, ha, ha. Ooooo, you're such a Derpnut"

Person B "Tehehe, yeah but you wouldn't have it any other way!"

Person A "Of corse not, you're the best Derpnut of all!"
by Foal The Winnie March 26, 2013

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