When playing the gametype "search and destroy", a Ninja Defuse consists of sneaking up behind the member of the attacking team who is planting the bomb at either target A or B and lying in wait behind them for them to finish planting. As soon as they have done so, one begins immediately to defuse the bomb (occasionally actually pulling it from underneath them). The enemy who has just planted the bomb rarely check behind them for a ninja, so concerned are they with watching nearby corners for oncoming enemies. Most effective when all but one member from each team has been eliminated.
Bomb planter:Aw man i just planted! How the hell he defuse that?
Ninja:Aha n00b i just ninja defused you.
Commentator 1: Oh, he's allowing them not to know that he's there. As it is - He's gonna go do - We're gonna be looking at ninja defuse.
Commentator 2: OMG! OMG!
Commentator 1: He's gonna be able to sneak right in there. Work his way in there. Here comes the defuse!
Guy 2: Bro you need to try a Ninja Defuse.
Guy 1: WTF is that?
Guy 2: Just throw your covers over yourself in bed, and masturbate while he isn't paying attention, but keep quiet or you'll get caught!
Guy 1: Oh damn son! You're a genius!