Labubu is a mischievous elf-like character from Pop Mart's The Monsters series, designed by artist Kasing Lung, which became a global collecting craze through TikTok unboxings, celebrity sightings and blind-box reveals. Short, catchy Labubu sounds like this chant spread as creators reused them to soundtrack hauls, collection tours and reaction clips, where the repetitive bu bu bu bu instantly reads as playful and recognisable even without context. Its simplicity keeps it useful across languages, making it a handy audio stamp for cute, chaotic or surprising moments in short-form video.