Bad to the Bone was released by George Thorogood and the Destroyers in 1982 and quickly became shorthand for toughness in films, television and advertising, thanks to its unmistakable guitar riff. Decades later, the riff found a second life online as a meme sound, where creators use it ironically for animals, children and everyday people acting far cooler than the situation warrants. Its staying power comes from that instant recognition: listeners know the attitude before a single lyric is sung.