It is therefore possible to build an entire sentence of this word: * "Slaggit! The slaggin' slag-faced motha-slaggin' slagger slagged the slaggers." [Provided you add "the".] The term made its first appearance in the episode "The Immobilizer" of the original series (Starscream, when faced with the realization that the Autobots are actually smart, said, "We should vaporize those Autobot fools and fuse their carcasses into slag!"). It was then used as an insult in "The Return of Optimus Prime, Part 2" of the original series (Galvatron to the Hate Plague-infected Cyclonus: "Die, you worthless piece of slag!", right before he became infected himself).