Top Definition
it is a word meaning happyness, enjoyment etc, derriving from the dyslexic, "fun"
"dyslexics get all the fnu!"
by ding dong November 01, 2003
Nut quite fun, but as much fun as any person of Germanic descent could ever hope to achieve in a lifetime.
Dieter had fnu driving his new Mercedes on the Autobahn.
by The Harlot March 04, 2004
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