Chirpse so subtle, but effective, that the other person doesn't realise until it's too late
Guy 1: Dude I totally scored with that girl last night!
Guy 2: Really? She didn't seem that into you...
Guy 1: It was a classic ninja chirpse
by Gerontius June 06, 2013
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To throw up so violently that it causes one to strike a ninja pose.
Bill drank too much last night. He ended up ninja chucking his beer all over the bathroom.

I just ninja chucked so hard I punched the wall.
by Geistsoul13 October 13, 2012
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When you run really fast into a room and close the door because you imagined that a ninja was chasing you or some other sort of danger approached. Generally used to prepare for a future ninja attack.
QUICK! RUN!

why did i just run into your room?
32 seconds. Good ninja drill time.
by 007hippo September 29, 2009
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The act of directing ass-air towards your adversary’s nose while simultaneously emulating your favorite Bruce Lee move.
Ripping one in a meeting room, performing the ass Judo and exclaiming "Awwwwww! Ninja Fog!" then bowing in respect.
by ZoinksS2k January 27, 2009
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A person who can take a shit any place, any time, without anyone knowing about it.
Girl 1: How are you feeling?

Girl 2: Much better since I took a shit in your studio apartment, thank you.

Girl 1: Wow, I had no idea. Gold throwing star, Ninja pooper.
by newsvava February 21, 2009
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A prank that is pulled usually in high school by taking someone's back pack, taking everything out, turning the backpack inside out and putting the stuff back in.
Dammit! The seniors ninja sacked me again.
by YarmouthClippers June 13, 2009
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