In chat, it is the act of saying something before someone else. It only counts if someone else actually says the same thing afterwards.
JKuang: 24,495 = "Over 24,000"
Puppettron: weird, 24,495 is over 24,000
CraziAsian: ninja'd
(V): When someone gives another person such a good comeback that the person being exposed to the torment never even sees it coming. But the burn does not end there my amigos. The Ninja'er comes back for a second attack, ending with their battle cry, "Ninja'd!" Then disappears before you even have time to pee your pants from shock. Here's a diaper baby, clean yo'self up. You be dirtying up my new kitchen floors. .. bitch.
Person A: "I think I was just Ninja'd and I may or may not have just pee'd a little bit."
Person B: "Ninja'd!" *Disappears*
after sexual intercourse the act of walking across the room taking off the condom and quickly spinning around and throwing said condom at the woman's face like a shruiken
I totally Ninja'd that ho last night!
A new tactic the the FPS Xbox 360 game, Halo 3. A Player lures another player into following them. Player 2 is following player 1. Player 1 goes around a corner. Player 2 Follows. Player 1 jumps backwards, and Player 2 passes under Player 1. Player 1 Melee's Player 2 and instantly dies due to an assassination. Ergo, Ninja'd.
Blue Player: "YOU JUSt GOT NINJA'D!"
Red Player: "STFU"
the act of doing something successfully in a stealthy manner & when exiting the scene, you say "Ninja" in a spooky tone to rattle other people in the area who didn't realize wtf was going on.
Dude, you hella Ninja'd his oblivious dumb-ass!
When a Nerd playing World of Warcraft, steals an item that he has no apparent use for and his group member needed it.
He just took my epic sword and he cant even use it. He ninja'd my sword!!!
to be extremely high yet act so sober that no one was able to tell the difference.
Kevan ninja'd everyone at the party last night.