The whomp whomp sound is the classic sad trombone, a short brass phrase long associated with losing moments on game shows and with comic disappointment on television. Its descending notes became shorthand for failure, so editors and meme makers adopted it as an instant punchline for videos, streams, and reaction clips. It spread through short-form video and soundboards because the joke needs no setup or caption, and it still works today because audiences recognise the anticlimax within the first two notes.