when two Sundays meet

when two Sundays meet

Never. Usually said sarcastically. A: "When are you going to help me clean out the garage?" B: "How about when two Sundays meet?"
See also: meet, Sundays, two
Farlex Dictionary of Idioms.
See also:
  • How will I know you?
  • How will I recognize you?
  • recognize
  • meet up
  • very
  • (I'm) (very) glad to meet you
  • glad to meet you
  • make ends meet, to
  • I would like you to meet
  • I'd like you to meet