Klaatu Barada Nikto

Classic science fiction, The Day The Earth Stood Still; the story of an alien visitor who leaves a warning without otherwise altering human civilization, much. Somewhat of a forerunner to the Star Trek credo of not interfering with those they met on their voyage, Klaatu's warning essentially says stop your threatening behavior and we'll leave you to be the jerks you are, or something like that.

Their have been other incarnations of the magical phrase used by the visitor, and even a band named in his honor. The band is also from a foreign place, Canada, not Liverpool.