Place it at the end of a fail sequence, after a crowd cheering build-up collapses. Start with the crowd cheering for false hope, cut to this clip for the result, then add a sitcom laugh track if the reaction shot needs extra push.
About this sound
A 3.6-second trombone phrase of four descending notes, usually heard as womp womp womp womp, played with a drooping brass tone. It feels instantly deflating and playfully mocking, turning disappointment into a laugh rather than real sadness. The cue comes from comedy and game-show style humor, where it was used to punctuate fails and jokes that missed.