you must be joking(redirected from you've got to be joking)
you must be joking
You must not be serious. What you are saying is very surprising or unreasonable. Twenty bucks for a child's ticket? You must be joking! My painting sold for $5,000? You must be joking.
you must be ˈjoking!,
you’re ˈjoking!(informal) used to show that you do not believe something, or that you find something ridiculous: ‘It’s the best movie I’ve ever seen.’ ‘You must be joking!’ ♢ ‘The boss wants us to work late again.’ ‘What? You’re joking!’
See also: must