The phrase itself is everyday Mexican Spanish slang for calling out nonsense, which is why it travels so well as a short reaction clip. It circulates mainly as a WhatsApp audio and meme sound, dropped into chats, reaction videos and short-form edits whenever someone posts an unbelievable claim or a bad excuse. Its appeal is its bluntness and familiarity: Spanish-speaking viewers recognise it instantly, even without context, and it needs no setup to land. That instant recognition keeps it in regular use for playful arguments and comedic shutdowns.