An imaginary idealistic state where everything is perfect. It is usually used with reference to someone who has an overly optimistic and unrealistic belief.
If you think you can get a managerial job without any qualifications or experience you are living in cloud cuckoo-land.
Where did it originate?:
'Cloud cuckoo-land' derives from a comment made by was coined by the 4th century BC Greek playwright Aristophanes in the whimsical and extravagant play The Birds. First used in English in the 1820s, in the United Kingdom.