Verb:To Ninja or to be Ninjad. meaning to give it to someone real good. Go all the way and then some. No half assing..giving it 200%. Usually referenced for acts of a sexual nature or revenge.
Dave was so ninjad by his lover he couldnt walk for three days. "Totally worth it" he said, "I cant wait to be ninjad again"!

Maggie said "I am going to Ninja Mike so bad he wont know what hit him"
by LilSumptin February 14, 2019
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I was reading my daughter a bedtime story and farted. I told her she had ninja ducks running around in her room.
by #1id10t April 13, 2020
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A small Gnome-like creature from the Ratchet & Clank video game series. Highly annoying and carries twin swords that it tries to cut your crotch with.
by Xalrons456 February 11, 2012
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a super annoying video game enemy that can run really fast, even around corners, to make you waste all your ammo.
I tried to beat that game the other day but the extremely fast and agile and often invisible ninja bastard made me game over all night
by Kate Hanami November 7, 2021
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Any secretive adventure legal or not, good or bad.
Damn my in-laws are visiting again! Gotta go on a ninja mission to get high!

Sarah just got a new girlfriend. She works at the mall. Ninja mission?

Marah just had her baby, let’s go on a ninja mission tonight and drop off some food!
by YubNub83 September 5, 2019
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Accidentally falling out of a ladies Vagina only to reinsert in a hurry and enter her Anus
Michaelangelo slipped out of April's Pussy and ended up Cowabunging her in the Sewerpipe, causing a Hairyback Ninja Turtle
by Wogboy13 May 18, 2023
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Term that describes someone who sees people not as individuals but rather as representatives of the demographic group they belong to based on race, ethnicity, sexual orientation, and so on
^ My gay friend, Naomi, who is black and Latina, got the results of her DNA test back today and found out she is 1/64 Native American!
> Yeah? So what?
^ So what? The little Diversity Ninja inside me is excited for her. That's what's "So what". Duh!
> Oh...
by thurb March 31, 2023
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