A person who lacks the common sense to avoid antagonizing ninjas. A social klutz who does not know how to behave in public. Missing hands or fingers is a sure sign, but not required.
I can't believe that you just ate my BK mini burger off my plate, you are such a ninja petter!
You: Let's wait for the light to turn before we cross.
Me: You are such a ninja petter, there's no traffic.
when you think you're going to sneeze, but then you don't. it's there one moment, and then it just disappears like a ninja!
Friend 1: *look of concentration*....dang!
Friend 2: what?
Friend 1: ninja sneeze
Friend 2: aw, i hate that
Friend 1: i know right?
A secret that not even the secret keeper or teller knows.
No one knows so its a ninja secret.
Person 1 " so hows life"
Person 2 " its a secret"
Person 1 " you can tell me your secret"
Person 2" its a ninja secret"
Person 1 " what?!"
Person 2 " I dont even know the secret, there for its a ninja secret"
A running, jumping start slap to the face; with a penis. A form of the Tony Danza penis slap.
Nick ninja danza'd Kristin and showed her just who the boss really was.
A person who occupies a bathroom stall and refuses to make any BM noises until the entire bathroom has been vacated. Occasionally, a bathroom ninja will even go so far as to stand on the toilet seat to avoid detection by other bathroom-goers.
Jacob hid in the shadows cast by the stall walls like a bathroom ninja until the final shitter had left the restroom.
When someone appears or disappears from the surrounding area with few or no people noticing.
Also when you do a really cool ninja move, especially if you could never do it again.
Joe: Oh, hi Jon.
Jon: Hi Joe.
Sam: Hey guys!
Joe: When did you get here?
Jon: He pulled a ninja.
Man: *drops glass*
Waiter: *catches glass without spilling drink*
Man: Wow, you just pulled a ninja!
Noun: A morally bankrupt man who covertly removes his condom during sex in order to increase his pleasure at the expense of the woman whereby he ejaculates inside the woman without her permission and likely causing an unwanted pregnancy. The behavior of a condom ninja should be considered a type of sexual assault or sexual misconduct.
Verb: To act in the capacity of a condom ninja.
Noun: Poor Sharon hooked up with a guy who turned out to be a condom ninja and got pregnant.
Verb: What a jerk Paul talked about how we was going to condom ninja Lisa at the party tonight, we should warn her.