Top Definition
a phrase made famous by musical artist dappy from N-Dubz, na na nai translates into english as - "Im a cock with a stupid hat".
"wheres my hat? i wanna be "na na nai" today when i go out.
by ChavBusters February 12, 2010

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Photos & Videos
Supreme expressionism. Can often be said randomly or when excited.

Expression of happiness or joy best when slurred in a deep voice.

Also famously used in a song by N-Dubz.

Mainly used in the depths of SW London.

Boy1: we got no chemistry test.
Boy2: yeahhhh NANANAI or NANANAAAIIIIIIIIIII (slurred - deep voice)
by Gus Grant February 20, 2008

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Your favorite word on a white mug.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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This is exactly the term to use when trying to describe how much of a G you are when you get discounts at whatever showroom you go to! Na Na Nai!
boon-ilo:Yoo beleev Yoo beleev Yoo a G cuz yoo went to da park wif ure frenz 'n' letta shot off into da sky

zbud-mis: I believe I'm a G because I can spell correctly. Na Na Nai!
by N-Slomz May 14, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt