Oh yeah is a widely used reaction phrase rather than a single identifiable recording, which is why this short clip works across so many different videos. On soundboards and in meme edits, the phrase has become shorthand for approval, excitement and a satisfying payoff, especially when a creator wants a fast, recognisable reaction without dialogue or explanation. Its popularity comes from that flexibility: the same two words can celebrate a win, underline a joke or cap off a reveal, and viewers understand the tone instantly even without knowing where the recording came from.