The phrase itself is everyday Brazilian Portuguese, where beijo is a common sign-off in messages and calls and tchau is the informal way to say goodbye. Repeated three times, it became a shareable short audio on soundboards and in WhatsApp conversations, passed around as a light alternative to a plain bye. Its brevity, under three seconds, and its clear repeated rhythm helped it spread in edits and chats, and it remains used when someone wants a farewell that sounds affectionate, familiar and a little humorous rather than serious or final.