The clip is linked to José Castelo Branco's appearance in the MJP campaign for the 2019 Portuguese legislative elections, where his flamboyant delivery turned a simple kiss sound into a memorable moment. Shared online as a short standalone clip, it became known simply as the muah meme, detached from its original political context and reused for affectionate or teasing reactions. Its staying power comes from that simplicity: one recognisable voice, one clear gesture, and a sound that needs no translation to be understood in memes and short videos.