The word Hallelujah has been used for centuries as an exclamation of praise and joy, most famously in choral music such as Handel's Hallelujah Chorus, which is why a single sung burst carries such instant grandeur. Online, short clips of the word have been lifted from songs, films and choir performances and reused as a quick audio punchline, divorced from any religious context. Its popularity endures because it needs no explanation: one triumphant note signals success, relief or mock-drama in a way almost every viewer recognises immediately.