Place it right after the reveal in an edit, once the surprising moment has landed, so it acts as the audience reaction. Build tension first with Sudden Suspense, then follow this clip with Oh My God Wow to heighten the reaction before cutting to the next scene.
Über diesen Sound
This short spoken reaction clip runs for just over two seconds, with one voice saying the title line as a direct response to something surprising. It carries a feeling of stunned amazement, that impressed pause after a reveal, a twist or a claim that is hard to believe. It works best as a knowing reaction, letting the words do the work instead of adding extra drama or explanation.