Narna comes from the word 'banana'. Can describe someone who made a mistake...

Also used in a friendly way to tell someone they have been silly.

Mainly used by lazy people or chavs.
Girl:'Does it go over there?'
Boy:'No you narna'
by (>'.'<) MeOw (>'.'<) June 21, 2005
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A senseless, stupid or foolish person.
Person One: Oh I've forgotten to turn my phone on silent
Person Two: Eee, you're a naf narna
by Dawn French's Number 1 Fan January 15, 2011
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