Bad Day was released by Canadian singer-songwriter Daniel Powter in 2005 and became a worldwide hit through radio play and television exposure, with its plainspoken chorus about a difficult day making it easy to remember. Years later, short clips of the song began circulating online as shorthand for bad luck, especially in fail compilations, reaction videos and short-form edits where a single musical cue could explain the whole joke. Its staying power comes from that universality: almost everyone recognises the feeling, even without hearing the full song.