ninja hour 

The beginning of ninja hour is signified by actions one attemps and succeeds where they would usually fail.

Brett just caught the pop bottle I threw at him behind his back! It must be ninja hour again

ninja hour by PseudoVoid October 14, 2008

Ninjajob

1. When a person wearing a ski mask or any other type of face covering, preforms fallacio upon another person's penis.

Dean was glad that he got a ninjajob on his birthday, he really didn't feel like seeing her face that morning.

Ninjajob by lordEden June 30, 2009

ninja 

v: to steal sneakily
n: an extraordinary force at something (usually athletic)
n2: an ancient Japanese spec-op
adj: to be as cool as a ninja
adv: to do something in a way that a ninja would do it

v: Yesterday I totally ninja'd this book from you, here you go.

n: Yeah, Richie's a ninja at dodgeball, he once vaulted Tommy to dodge an attack.

n2: Ninjas are cooler than pirates.

adj: OMG! This movie is freaking ninja! (Yes, I'm talking about Donnie Darko)

adv: Check this out! I can ninja laugh! *does not laugh*

ninja by MG1992 September 4, 2009

ninjafoo

the ability to react to something without being aware of it.

did you see kevin dodge that bullet his was really using his ninjafoo.

ninjafoo by rob-dizzle October 3, 2009

Ninja Up

The act of solving any and all problems through the use of voilence and smoke bombs.

Stop crying, ninja up, and hit him or her in the neck with a throwing star."This sentence can be used for any situation."

Ninja Up by bmoten November 16, 2010

Ninjaculated 

Ejaculating secretly in a public place with no one noticing

dude, my friend just totally told me that he Ninjaculated in his classroom. What do you think the teacher's gonna think when she finds out?

Ninjaculated by -MV- November 25, 2010

ninja beer 

A beer that is high in alcohol content, but tastes like a regular beer.

Drunk ass: Yo I thought this was regular piss beer, but this shit snuck up on me like a ninja. I was shit faced before i knew what happened.

Bro: yeah, who gave you that ninja beer?

ninja beer by Vladivastok March 28, 2011