Usmc slang for non judicial punishment
Dude, that marine got ninja punched by the big green weenie for the second time, he is getting an bad conduct discharge.
by Kreator89 February 6, 2010
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The negative outcome of showing off.

The term originally came about from someone declaring that he was going to "ninja punch" another, but bent his wrist upon impact and ended up hurting himself more than the other person.
Ninja punch can apply to any action, not just a punch, in which the person doing the "ninja punch" is attempting to show off to others, and fails horribly.
While playing a role play game, Billy attempted to throw a grenade at the enemy by bouncing it off of three walls and down the hall. Sadly for Billy, and those standing next to him, he rolled a 1 (critical failure) and dropped the live grenade at his feet.
One of the other plays declared "Way ta ninja punch!"
by meoka2368 November 30, 2007
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In the act of giving anal sex, while all the lights are off use a dildo instead of your wang and sneak infront of the reciever while they think you are behind them, and in one quick movement turn on the lights and punch them in the face screaming "ninja punch bitch!"
Man that chick was so rude, i ninja punched her and called it good.
by teh amazing ace October 19, 2006
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The act of catching a fart with your cuffed hand then throwing it under an unsuspecting subjects nose.
Dude when bill was sitting in his car with the window down I hit him with a Ninja Punch.
by Tigs84 October 27, 2013
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When a man and a woman love each other very much they often engage in sexual acts. This is known as a Ninja shit pucn

Preperation:
The man needs to have a shit that is about the same size as his erect penis. Remove the said shit from the toilet and put it in the freezer for later.

Once your woman is home remove said shit from freezer and place under pilow (or easy access to wherever the act is going to take place).

The Act:
Once you and your partner are engaged in sexual contact you begin to have anal sex. The man teases the woman by coming all the way out and back in again. After about the 4th time, stealthily grab the shit and shove it in her anus.

Whilst she still thinks your inside her stealthily run up and turn on the light. Run toward her shout "Ninja" and punch her in the face.

The End
Ninja Shit Punch, enough said
by KingLouie2 August 28, 2008
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An unexpected, very rapid punch to the buttocks - typically for retribution - most often achieved while walking up a staircase. "Ninja butt-punch" is quickly, quietly spoken by the attacker as he makes his move, with "BUTT" heavily accented as the fist makes contact.
"ninja BUTT-punch" -- "Ahh!! You faggot!!!"
by alftoid January 5, 2010
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Requires pure stealth until the moment you scare the shit out of them by yelling NINJA at the top of your lungs just before swiftly junk punching them and disappearing into the darkness again leaving them with sore balls and a fear of the word ninja.
"Once you've been ninja junk punched you can never hear the word Ninja again without a chill of terror running up your spine."
by Momo6717 July 20, 2012
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