The phrase comes from everyday spoken Arabic, especially Egyptian dialect, where sab deen refers to insulting religion and masma3tesh means I did not hear. As a standalone clip its exact original recording is unclear, so it circulates mainly as a detached reaction sound rather than a scene from a known work. It spread through short video edits, soundboards and messaging chats, where the short runtime makes it easy to replay instantly. It remains popular because the denial works out of context for any awkward argument.