ninja 

a person that you have a crush on

girl 1: i can't find that ninja anywhere!
girl 2: who?
girl 3: that totally hot guy she has been crushing on.

ninja by bizzy5454 July 28, 2011

Ninja 

(N)o (I)ncome, (N)o (J)ob, or (A)ssets

That dude's a ninja.

Ninja by pedant5 August 17, 2011

Ninja 

Someone with KICK-ASS moves. They are practically impossible to see.

Guy 1: What was that?
Guy 2: Could be a ninja.

Guy 1: H-HOW CAN YOU BE SO C-C-CALM!?

Ninja by MagicalNarwhal August 24, 2011

Ninja 

Super Stealth Killer

The girls in this tribe will go all ninja on you in a heartbeat.

Ninja by superstealthkillergirl September 10, 2011

Ninja Docker 

docking is the act of putting something in your urethra. In layman's term, its the act of shoving a dildo up your penis hole. a ninja docker is some one who puts their penis up another penis so fast that the other person doesnt even feel it or know what just happened.

guy 1: i'm not sure what just happened but wow does my penis feel awesome.

guy 2: dude you just got ninjadocked

or

look at that dude he is such a ninja docker

Ninja Docker by Dr McNinjaDocker September 22, 2011

Ninja disgust 

When someone, usually your parents, randomly springs a topic, usually sex related, onto you unsuspectingly. Much like a ninja attack its always a surprise and sometimes its deadly.

"Son...I found these condoms"
"Woh! Ninja Disgust...how about some warning next time"

Ninja disgust by Mermaidmagic October 14, 2011

ninja 

stealthy individuals specialized in espionage and murder. They often use numchucks and fight with un-gloved hands

That girl just killed someone with her bare hands. She's such a ninja

ninja by tennis ball kate October 18, 2011