when pigs can fly

when pigs can fly

At a point in time that will never come to pass. (Used to show skepticism or cynicism over some hypothetical situation or outcome.) A: "If we could just get Democrats and Republicans to agree on a tax reform bill, we could bring the deficit down in no time." B: "Sure, when pigs can fly!" I'm sure that David would be happy to pay for everyone—when pigs can fly.
See also: can, fly, pig
Farlex Dictionary of Idioms.
See also:
  • the thing is
  • the thing is...
  • the thing of it is
  • agree to
  • ((do) you) know what I mean
  • ((do) you) know what I'm saying
  • against the current
  • (Do) you feel (me)?
  • approve
  • approve of