be in cloud-cuckoo land

To believe in or be absorbed by unrealistic, idealized, and/or fanciful ideas that are beyond the realms of possibility. If Tom thinks he'll be able to live off his bad poetry, he's in cloud-cuckoo land!

Common Names:

Name	Pronounced	Usage
Joaninha	-	Portuguese
Chlodochar	-	Ancient Germanic
Eireen	ie-REEN	Irish
Karma	-	Bhutanese
Allan	['ælən]
Radoslava	rah-dah-SLAH-vah (Russian)	Czech, Bulgarian, Russian, Serbian, Croatian, Macedonian, Medieval Slavic