La-la land

From Fresh Dictionary

English

Noun

La-La Land (uncountable)

  1. The fictional place where wandering, sleeping, or dreaming minds are metaphorically said to end up.
    Oh, don't mind him, he's usually up in La-La Land, with all his silly ideas and whatnot.
    Don't worry boss, the guards are in La-La Land. They won't be up for many hours.

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