When a character gets their arm cut off or destroyed slightly above or below the elbow and have it replaced with realistic looking and acting fake instead of just a prosthetic. Not to be confused with getting Luke Skywalker'd as that only refers to losing a hand.
Person 1: Hey, why does Naruto have a part of his arm all bandaged up?
Person 2: It's because he has a fake arm. The real one was lost in a fight.
Person 1: HE GOT ANAKIN SKYWALKER'D!?! NICE!