tell me something I don't know

tell me something I don't know

A humorous or sarcastic response to some obvious statement or information. A: "Boy, it's cold in here!" B: "Yeah, tell me something I don't know—the heater's broken."
See also: know, something, tell
Farlex Dictionary of Idioms.
See also:
  • IFTFY
  • FTFY
  • IFYPFY
  • get a room
  • You call this (something)?
  • Queen Anne is dead
  • Queen Anne's dead
  • the Dutch have taken Holland
  • Anne
  • zoo