Place this clip right after the confused reaction in your edit, then follow it with a baby laughing meme for the payoff, or end the sequence with a bruh soundboard button to close the scene.
About this sound
This is a roughly ten second clip built around repeated baby style babbling that sounds like gugu gaga, delivered in a playful, nonsense voice. It feels deliberately silly and childish, turning any serious moment into something light and absurd, like an adult suddenly reverting to toddler talk for comic effect instead of giving a real answer.