To smoke and leave undetected in an otherwise public or non-smoking area.
"I ninja smoked some weed in the McDonald's bathroom, bought a Big Mac, and left."

"I had a cigarette in the library the other day, crouching behind the children's books."

"We ninja smoked a bowl behind the supermarket just before someone took out the trash."
by A Clockwork Orange October 23, 2006

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Top Definition
To dissappear or leave with out being noticed. Taken from the myth of Ninjas using smoke to dissappear. Used as either a noun or verb.
Will: Where did Laura go?

Rich: She totally ninja smoked outta this place. I never saw her leave nor did she say bye. Just the scent of smoke and some disorientation as she departed
by disfunktedfish September 11, 2006

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The ability of an individual, through luck or planning, to avoid unpleasant situations, particularly those involving law enforcement or government bureaucracy. See also: American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History by Chris Kyle, with Scott McEwen and Jim De Felice. 2012.
"Jason went to sleep early while everyone else at the party got arrested for indecent exposure. Jason has the best ninja smoke ever."
by ajeffersonk September 20, 2013

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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To fart into your hand and hold it there. Then take the hand of fart air and throw it at your friend at close range while yelling "NINJA SMOKE!"
Ray just ninja smoked me on the way to class. It smelled like rank moose anus!
by Russ Conrad February 06, 2007

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.

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The Urban Dictionary Mug

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

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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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