(but) that's another story

(but) that's another story

A phrase used to avoid talking in detail about something, sometimes suggesting that the story will be told at another time. I hear that Nick and Liz are pretty close these days, but that's another story. How's your job going? Yeah, I was sick for months, but that's another story.
See also: another, story
Farlex Dictionary of Idioms.
See also:
  • How long is a piece of string?
  • eggs is eggs
  • from my cold, dead hands
  • how/what about...?
  • how about
  • (as) sure as eggs (is eggs)
  • made in China
  • (one's) best foot forward
  • best foot forward
  • going, going, gone!