Sweet Home Alabama is a 1974 song by Lynyrd Skynyrd, and its opening guitar part became one of the most recognizable classic rock hooks in popular culture. Online, short clips of that riff spread far beyond the full song and turned into a meme-like reaction sound for Southern references, country stereotypes and state pride jokes. It stays popular because listeners identify it almost instantly, so creators can signal the joke in seconds without needing extra explanation.