Top Definition
Originally one of the songs featured in Windows Media Player, this term has evolved to mean a good friend of yours, or a "white nigga." Black people are forbidden from using this term. It is strictly used by an elite class of caucasion friends.
Dave: What you up to ninja tuna?

Brian: Nothing just got done jerkin it.
by PweekOnYou November 09, 2013

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The Urban Dictionary T-Shirt

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A person, so awesome they amaze every person who sees them... they also have horrible B.O. and breath that smells like Tuna, so you are reluctant to approach them but always enjoy there awesomness from afar.
"Carl is so awesome! but he's more of a ninja tuna, so I don't hang out with him."
by eliwa&kimmy March 24, 2010

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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