Are you having a laugh?

Are you having a laugh?

An exclamation of disbelief or incredulity, like "Are you being serious?" or "Are you kidding me?" Primarily heard in UK. John: "The landlord has increased our rent again." Janet: "Are you having a laugh? How are we supposed to afford that?"
See also: have
Farlex Dictionary of Idioms.
See also:
  • get out!
  • get out of here
  • Get out of here!
  • stop the lights
  • get away with you!
  • get outta here
  • You couldn't!
  • You wouldn't!
  • noes
  • oh noes