to discretely (like a ninja) tuck an erection under the waistband of underwear or belt line of pants.
a true ninja swipe is done in one swift motion.
a true ninja swipe is done in one swift motion.
yo, i was freeballing in my sweats when i got a boner- i had to ninja swipe that shit so it wouldn't look like i was proppin a tent
by princealberto July 7, 2009

One who is very difficult to find, extremely mysterious and lightning fast. Stealth ninjas are nimble on their feet and NEVER fall.
"You can't see me, but i'm there."
"You can't see me, but i'm there."
-OH MY GOD, you totally almost fell down that snow hill.
-But I didn't.
-Yeah, lucky you.
-Luck?? I'M THE FUCKIN STEALTH NINJA. WE NEVER FALL(:
-But I didn't.
-Yeah, lucky you.
-Luck?? I'M THE FUCKIN STEALTH NINJA. WE NEVER FALL(:
by JuliaLuvsYou January 23, 2009

by The soccer ninja July 20, 2010

When a person online goes afk without warning or provocation. Usually to the utter dispair of whoever he/she is interacting with online (note screams of frustration) and often frequently.
by Matrix_Gymnast August 7, 2006

The Ninja King is a chess move where your King takes every other piece on the board, moving crazy and ninja-like (you basically grab the king and knock every other piece over). It can only be used if either you are check-mated, or the King is your only piece on the board.
Note: This is not actually a real chess move.
Note: This is not actually a real chess move.
"Oh man, I almost won that game, then Frank pulled a massive Ninja King on me. Did not see that coming."
or:
Bob: "Check Mate!"
Frank: "Oh yeah? well how do you like my NINJA KING!"
*Grabs king and destroys every other piece*
Bob: "Shit."
or:
Bob: "Check Mate!"
Frank: "Oh yeah? well how do you like my NINJA KING!"
*Grabs king and destroys every other piece*
Bob: "Shit."
by Weardow7 September 7, 2007

a feline that also has 1337 |\|1|\|j4 5|<1|_|_Z.
will often leap from the shadows to play with string
will often leap from the shadows to play with string
Piro: that cats insane at 4AM, and you cant see it coming when he scratches your ass up.
Largo: Thats because its a |\|1|\|j4 |<177`/(ninja kitty)
Piro:....shut up Largo....
...megatokyo rules....
Largo: Thats because its a |\|1|\|j4 |<177`/(ninja kitty)
Piro:....shut up Largo....
...megatokyo rules....
by Jimmy Kline July 24, 2008

Ninja pacifiers i want your baby sucking on me
Thats kinda gay ninja like pedophile priest levels of wrong
Thats kinda gay ninja like pedophile priest levels of wrong
by TheFunnyJoJoMan October 4, 2020
