The sound comes from "Bad to the Bone," a 1982 song by George Thorogood & The Destroyers. Online, the opening riff became a meme shorthand for edgy coolness, biker attitude, and especially skeleton or skull jokes. It spread through short edits, reaction videos, and reposted meme compilations across social platforms. The clip is still popular because the riff is instantly identifiable and delivers the joke in a fraction of a second, making it ideal for fast visual reveals and ironic character intros.