the act of someone being a ninja and is really good at it
Josh: how did you do that ?
mitchell: cos i'm "A Fucking Ninja"
by mytch April 26, 2007
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Like a fucking ninja is when you escape from a place or thing or situation or person without being detected.
"And while she turned around to see where the noise came from, I jumped up and escaped through the vents. Like a fucking ninja
by Kalikedeshi November 17, 2013
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A woman who hides how freaky she is. If you discover her and you are a freak yourself never ever give up on her. She will make your fantasies and your dreams come true.
Bill: So Tim I heard that you and Lexi enjoyed a bit of alone time together. So what happened?

Tim: *mentally freezes with pleasure from remembering last night* She is such a sexy fucking ninja...
by Goddess lover April 19, 2011
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I ninja fucked that bitch last night thanks to some pills I slipped in her drink.
by Ninjaassfucked February 18, 2019
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Like a fucking ninja is when you escape from a place or thing or situation or person without being detected.
"And while she turned around to see where the noise came from, I jumped up and escaped through the vents. Like a fucking ninja
by dick lick👅 November 27, 2017
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To be completely silent during any type of intercourse
(Friend A) "did you have fun with John Smith last night?"
(Friend B) "It was alright, but he Ninja-fucked me and im not into that. It was so quiet you could hear crickets!"
by BlowholeJoe June 29, 2023
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