The exact origin of this half-second rainbow clip is not documented, which is common for short user-uploaded soundboard sounds. With only a few views so far, it has not yet become a widespread meme, but single-word vocal clips like this typically spread through short-form video edits. Creators reach for them because they are instantly understandable across languages and fit neatly into transitions. The word rainbow is strongly tied to color, positivity and LGBTQ+ pride online, which gives this tiny sound a ready-made emotional shorthand.