end of story

• end of

end of story

1. (colloquial) That is as much as I know, am prepared to reveal or am willing to say about the subject.
2. (colloquial) That is the definitive fact; there can be no argument.

   Synonym: end of discussion

   • 2013, Richard Linklater, Julie Delpy, Ethan Hawke, Before Midnight (motion picture), spoken by Jesse (Ethan Hawke):

     If you don't want to move back to the States, we won't. End of story.

   • 2022 December 16, Bernhard Warner, quoting Elon Musk, “Musk Faces Growing Anger Over Twitter Ban of Journalists”, in The New York Times‎, →ISSN:

     “You doxx, you get suspended, end of story,” he said, and then abruptly left the call.

• (that is as much as I know, etc): end of, full stop (UK), period (US), that's that