Quote from : Mustaine: A Heavy Metal Memoir Book

I let that swim around in my aching head for a few minutes - "the arsenal of megadeath...the arsenal of megadeath" - and then, for some reason I can't quite explain, I began to write. Using a borrowed pencil and a cupcake wrapper, I wrote the first lyrics of my post-Metallica life. This song was called "Megadeth" (I dropped the second "a"), and though it would never find its way onto an album, it did serve as the basis for the song "Set the World Afire." It hadn't occured to me then that Megadeth-as used by Senator Cranston, megadeath referred to the loss of one million lives as a result of nuclear holocaust-might be a perfectly awesome name for a thrash metal band.