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A really hardcore fan of the band Nine Inch Nails who feels the need to dress as a ninja at every live show. (Can also describe the "super-cool" people who wear Nine Inch Nails shirts to the Nine Inch Nails show.)
"I am the NIN-ja, you will all bow before me, for I am the Nine Inch Nails SUPERFAN!"
NIN-ja by Joseph and Beth July 11, 2006
Words you can keep

Ninja Pinch 

To steal something from somebody using stealth. Without anybody noticing the act...
I like that pen of John's. I'm totally going to (Ninja Pinch) it, when he puts it down.
Ninja Pinch by MbØt~Mk.II® March 13, 2015

Ninja Pooping

The art of layering the surface of toilet water with toilet paper to minimize the sound of splashing.
That's the last time I have Taco Bell for lunch at work. Now I'm going to have to do some ninja pooping.
Ninja Pooping by Extra Mayo January 27, 2013

Stage Ninja 

A wannabe roadie. Usually has the clothes and the tats but no real skill. Constantly boasts about where he has worked or how long he has been in 'the business'. Criticizes others openly but never offers an opinion of his own. Often carries a large quantity of useless keys to look important.
Get rid of these stage ninjas and get me some stage carps who know their stuff
Stage Ninja by dingoetmybaby November 5, 2019

Ninja Nude 

The act of fully undressing and taking a nude in a classroom, meeting, lecture or other busy event. Almost impossible to accomplish without getting caught.
James tried to take a Ninja Nude during the lecture for his girl and got his stupid ass caught!
Ninja Nude by UrbanDict is life July 13, 2016

pirate-ninja

a kilowatt-hour per martian day
Mark Watney created the pirate-ninja as a standard unit

The Law of Inverse Ninja Strength 

When confronted by ninja(s), the individual ninja will be far more powerful than a group of ninjas. To see the effectiveness of a group of ninjas simply use the equation power= 1/n, where n is the number of ninjas
Don't worry about the group of 1,000 ninjas, worry about the single guy, according to The Law of Inverse Ninja Strength
More from Urban Dictionary

Satellite baddies

Attractive women who are far from your location.
There are no hot girls in the area, theres only satellite baddies.
Satellite baddies by Banksy123 September 5, 2026
Word of the Day on September 10, 2026
Omg, the ramifications!”
-“You forgot about the rammys, bro.”
Rammys by Brandonmical August 4, 2023
Word of the Day on September 9, 2026

Failure Shower 

When you fail at something in life (eg. failing an exam or not getting a job), go home and spend an hour just standing in the shower, propping yourself up against the wall with your eyes on your feet.
Caleb knew the only thing to do after he didnt get prefect was take a failure shower.
Failure Shower by Vikingnz October 27, 2009
Word of the Day on September 8, 2026
Acronym for Non-Athletic Regular Person. Your schools lacrosse team probably shouts it at you while you walk by.
Lookie at these bunch of narps, NARP NARP NARP
NARP by Douchebag McKenzy March 31, 2010
Word of the Day on September 7, 2026

High School Liquid 

A person who can freely travel between and fit in with all high school social groups and classes.
He is high school liquid, he ate lunch with the nerds and hung out with the jocks after school.
High School Liquid by Thaedris July 30, 2008
Word of the Day on September 6, 2026

Purple Patch 

To describe coming into something good, coming into good luck and or good times.

Like walking over small green hills in the countryside then coming across a purple patch of flowers, thus it being unique and out of the ordinary.
I hit a real purple patch.

The other day this good thing happened unexpectedly then I was lucky with this, it was unique, I hit a real purple patch.
Purple Patch by Ralph Shitstorm October 27, 2020
Word of the Day on September 5, 2026
(Ewokese) Freedom!
And dying in yo' bed many years from now, would ya be willing ta trade all da days from dis here day ta dat fo' one chance, just one chance, ta come back here as young men an' tell our enemies dat dey may take our lives but dey will never take our freedom ... YUB NUB!
yub nub by rotjrem November 4, 2010
Word of the Day on September 4, 2026
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