A ninja bitch is a woman who realizes a friend is attracted to her sexually and intentionally uses that attraction to manipulate him (term originated from the intellectual whores/ladder "theory" of male/female relationships).
She knows he fixed her computer because he's sweet on her. She wants "to be friends". What a ninja bitch!
by Alinama S. May 12, 2006
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"BAM! Did you just see that tight ninja bitch?"

"yes; yes I most certainly did"
by SeptemberWasp May 27, 2005
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*Reading book*
*Ninja Bitch steals money off dresser*
*Person stops reading book and looks at dresser and the money is gone*
Person: DAMN THOSE NINJA BITCHES! THEY DID IT AGAIN!
by Alex Bahder May 5, 2006
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When a regular bitch-slap just isn't enough, a Ninja bitch-slap incorporates the ancient use of covert agents or mercenarys of feudal Japan specializing in unorthodox arts of war. The functions of the ninja included espionage, sabotage, infiltration, assassination, as well as open combat in certain situations. The underhanded tactics of the ninja were contrasted with the samurai, who were careful not to tarnish their reputable image.

A properly executed Ninja bitch-slap will probably land you a top spot on the bad ass list, right under Chuck Norris.
Scott: I wouldn't mess with Trevor if I were you, man.
I heard he Ninja bitch-slapped one guy so hard he left the country- completely disappeared...

Joey: That guy graduated dumbass,
he works at Taco Bell.

Scott: Oh, did he, Joey?
..Did he?
by thesameoldshit November 30, 2009
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Sally- Hey, I'm so happy we're going to the mall today, we're gonna have a blast!

Veronica- Oh, I forgot, my dog is sick, I can't hang out with you today

Sally- Oh.... okay, bye *hangs up phone*

Veronica- *calls boyfriend* Hey! wanna hang out today?

*Sally finds out* Wow! what a bitch ninja!
by JJPeche November 19, 2011
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A ninja who utalizes a sword in the art of combat.
Some Ninja: "what kind of ninja uses a sword... I'll tell you what kind of ninja a bitch ninja"

Samurai: "Actually I'm a samurai "

Some Ninja: "That's a funny way of saying bitch ninja"
by Icewin9 December 18, 2018
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You're now-ex girlfriend who pretended to be nice and sweet but then showed herself to be the most bitchy bitch in the world
Guy 1: How's your girl?
Guy 2: Not mine anymore. She's a ninja bitch
by Azden May 16, 2015
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