Noun. The hypothetical place where one is out of touch with reality, often after the excesses of alcohol or drugs. E.g."Don't bother calling Pete; ever since his drug binge last night he's in la-la-land". [Orig. U.S.]
LA-LA-LAND
Meaning of LA-LA-LAND in English
Slang English vocab. Английский сленговый словарь. 2012