Place this clip at the reveal point of a peekaboo edit, right after a build of everyday footage. Follow it with a baby laughing meme button to close the sequence on the reaction, keeping the boo as the middle beat rather than the opener.
Über diesen Sound
This is a seven-second clip of a baby voice delivering a small, drawn-out boo, with the innocence of the delivery doing most of the work. It feels sweet and mildly startling at the same time, like a jump scare that turns into a laugh because the surprise comes from someone far too little to be threatening.