Ninja Itch 

An itch that you can not find.

For example, Your arm feels itchy but when you scratch it you realise your arm isn't itchy - it feels it - and the itch is realy on some other part of the body. And we all know how stealthy ninjas are, so this is realy a "Ninja Itch".

Ninja Itch by Karimuru March 28, 2010

ninjabitch 

A girl who seems sweet and loveable and awesome when you start dating her, but turns out to be a bitch later, particularly by cheating on you.

"So, how are things going with you and Lisa?"

"Oh, we broke up man. She turned out to be a complete ninjabitch-- She fucked my best friend and didn't tell me for three months."

ninjabitch by Pebble January 17, 2006

Ninjawitch 

Stunningly beautiful if you can see them pat their cloak of spelling big words. Myla=ninjawitch.

That’s a ninjawitch for sure

Ninjawitch by Hahahah100130003 May 13, 2021

ninjabitch 

(adjective/verb/noun/everything) like a muvvabitch, but with ninja like stealth qualities about them . or, just as a slang term for anything

1.'improvisin' like a ninjabitch',
2'i'm gunna ninjabitch you in the teeth'

ninjabitch by seonaid May 10, 2006