The phrase comes from Brazilian Portuguese slang, where 'falar groselha' has long meant to talk nonsense or say something silly, with groselha (redcurrant) used playfully for worthless chatter. As a standalone audio clip it spread through Brazilian soundboards, WhatsApp audios and short-form video as a reusable reaction, detached from any single show or movie. Its popularity online comes from how universal the moment is — almost every group chat has someone who needs to be told, jokingly, that they're talking groselha.