Place it immediately after the failed punchline, before any reaction shot, so the verdict frames the flop. Follow it with awkward crickets to let the flop breathe, then bring in chipmunk laugh once the group starts laughing at the teller instead of the joke.
About this sound
This 13-second voice clip delivers the line 'You're the worst joke I've ever heard' as a blunt put-down aimed at a failed punchline. It feels cutting and awkwardly funny, the kind of verdict that makes a room pause before laughing at the joke teller instead. The insult lands because it judges the joke itself, turning a bad punchline into the real punchline.