The phrase comes from Brazilian YouTuber Felipe Neto, whose blunt, expressive delivery made cala boca porra a recognisable catchphrase among his Portuguese-speaking audience. Clipped from his videos, the short outburst spread through Brazilian meme pages, reaction videos and WhatsApp audio shares, where it became shorthand for telling someone to stop talking. Because the line is brief, loud and easy to understand from tone alone, it continues to circulate on soundboards and in short-form edits, especially when creators want a fast, funny shutdown.