Place it just after the setup line and before the reveal, then follow it with the Bruh Meme sound for the next beat, or cut to the Fail Sound Meme when the idea collapses completely.
Über diesen Sound
Unmmn is a brief 1.8-second vocal hum, a murmur with no words attached. It lands as hesitant and slightly amused, the kind of noise someone makes while thinking, doubting, or holding back a reply. That small, uncertain feeling makes it easy to recognize even without any context around it.