Online, oya oya circulates mainly as a short anime-style reaction clip, shared in meme edits, reaction videos and short-form posts rather than as a long scene or song. Its appeal comes from its simplicity: the repeated phrase is easy to recognise, easy to place over a new visual, and immediately signals playful surprise without needing subtitles or context. That portability has kept it in regular use for teasing reveals, knowing looks and lighthearted jokes, especially in edits where a single second of sound can set the tone for the whole clip.