Use it in the middle of a reaction sequence, after Sudden Suspense builds the moment and before Oh My God Wow lands the response. That order gives the reaction a clear setup and a strong follow-up without crowding the edit.
Über diesen Sound
This clip is a short vocal sound centred on a drawn-out “A”, repeated and stretched across about 7.8 seconds. The extended delivery gives it an exaggerated, over-the-top feel that reads as a reaction rather than a spoken line. It works as a quick burst of emphasis, letting the stretched sound carry the moment without any other words or effects getting in the way.