The clip comes from French internet culture around Morsay, whose short et oui line became a reusable reaction sound detached from its original context. Shared as a tiny MP3 on soundboards and in edited videos, it spread because the phrase is easy to recognise, easy to time and understandable even to viewers who speak little French. Its appeal is less about explanation and more about delivery, so creators keep using it as a compact badge of being right, especially in meme edits circulating among French speaking audiences online today.