The line comes from the 1975 comedy film Monty Python and the Holy Grail, where the narrator repeats the phrase after violent or absurd events in King Arthur's quest. The joke became a staple quote among Python fans and later spread online as a reaction sound for underwhelming good news. Its dry delivery and lacklustre cheer make it instantly recognisable, which is why editors still drop it into videos, streams and group chats whenever something meant to be celebrated falls noticeably flat in reality.