I'm Lovin' It launched in 2003 as McDonald's global advertising slogan, built around a short five-note motif that quickly became one of the most recognisable sounds in fast food marketing. The jingle was used across television, radio and restaurant advertising for years, embedding it in popular culture far beyond a single campaign. Online, creators stripped the short clip from its advertising context and reused it as a meme sound for food, satisfaction and indulgence, which is why it still appears in short-form videos long after its original launch.