What does "la-la land" mean?
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Los Angeles, California (often abbreviated L.A.). This expression pokes fun at the alleged eccentricities of the city's inhabitants. For example, What do you expect? Frederick has lived in la-la land for ten years and it has rubbed off on him. [Slang; c. 1980]
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A state of being out of touch with reality, as in
I don't know what's going on with Amy—she seems to be in la-la land. [Slang; c. 1980] Also see
cloud-cuckoo land;
never-never land.
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