Place it at the exact cut where a suggestion appears on screen, then follow the reaction with a wrong answer game show buzz for a failed idea, or precede it with sudden suspense to build up the bad proposal.
このサウンドについて
This is a one-second voice clip of a woman delivering the line 'I don't think so' in a flat, decisive tone, presented here as the second version. It feels blunt and lightly amused rather than angry, like a polite conversation being firmly closed. That dry certainty makes even a small disagreement sound final and funny.