Place it immediately after the reveal shot in the edit, with Sudden Suspense setting up the reveal just before it and Oh My God Wow following it to stretch the reaction across two beats.
Über diesen Sound
This short clip captures Chris Farley saying Oh My God in his unmistakable comic voice, lasting about two and a half seconds. It feels suddenly stunned and delighted at once, like catching something too absurd to believe, and it works because Farley sells the surprise with complete, over-the-top sincerity.