The act of roadie running with arms out-stretched in an absoloutly flawless attempt to make the run quieter, and increase velocity significantly. This takes prolonged practise, but when mastered is more effective than possibly imaginable.
"Holy shit, the cops just rolled up! Quick everyone Ninja Run the fuck outa this joint!"
"Omg i was nailing this chick last night when her parents walked in, so i had to naked Ninja Run all the way home!"
"Omg i was nailing this chick last night when her parents walked in, so i had to naked Ninja Run all the way home!"
by Ninja Jamie July 1, 2009
The act of defying buoyancy by lowering your body with arms parallel to the ground beside you, and running along the ocean floor at unbeatable speeds, for amazing distances. Only talented bosses can ninja run correctly.
by rosebudp January 17, 2013
In reference to Call of Duty games, it is a fancy way of saying "Nobody will hear me" when you are sneaking into or out of a house or other building you weren't supposed to leave/enter to begin with.
Buddy: Dude, are you seriously going to come with me later? Won't your parents hear you?
You: Relax, I'm running Ninja up in this biatch.
You: Relax, I'm running Ninja up in this biatch.
by AL_PS3 February 14, 2011
In reference to the Ninja/Ninja Pro perk of the CoD games. It's basically a fancy way of saying that you don't have trouble being quiet/sneaky.
Most often used when your friend is worried about you making noise when sneaking out of or into your house.
Most often used when your friend is worried about you making noise when sneaking out of or into your house.
Teen 1: C'mon man, let's go!
Teen 2: Did your dad hear you?
Teen 1: Relax buddy, I'm running Ninja right now.
Teen 2: Did your dad hear you?
Teen 1: Relax buddy, I'm running Ninja right now.
by AL_PS3 February 11, 2011