Cloud Cuckoo Land refers to an unrealistically idealistic state where everything is perfect. (`You`re living in cloud cuckoo land, mate.`) It hints that the person referred to is naïve, unaware of reality or deranged in holding such an optimistic belief. The reference comes from The Birds, a play by Aristophanes in which Tereus helps Pisthetai...... Found on http://en.wikipedia.org/wiki/Cloud_cuckoo_land
noun an imaginary place where you say people are when they seem optimistically out of touch with reality Found on https://www.encyclo.co.uk/local/20974