Put it near the end of a reveal, after a Fail Sound Meme for the mistake and before a Bruh Meme Sound for the follow-up reaction, so it sits as the middle beat in the sequence.
Über diesen Sound
This two-second clip has Cleveland Brown saying 'that's nasty' in a calm, deadpan voice, with no shout or extra sound around the line. It gives a dry, judgmental laugh, the kind that lands because he sounds unimpressed rather than shocked. The line comes from Family Guy, where Cleveland is a long-running character.