Place this clip at the reveal itself in reaction edits, after the setup shot has done its work. Follow it with the Happy Wow Fairy Tail button for a brighter retry, or precede it with an awkward moment sting when the letdown needs a slower build toward the final reaction shot.
Über diesen Sound
This 3.5-second voice clip pairs an exaggerated wow exclamation with a flat bleh sound right after it, like excitement giving up mid-sentence. It feels funny and anticlimactic, turning genuine amazement into instant disappointment, which makes the drop from impressed to unimpressed land as the whole joke in one short reaction.