Noun > la-la land

Noun – la-la land

1: a euphoric, dreamlike mental state detached from the harsher realities of life
When you spend time around [him] you are struck by someone who isn’t living in la-la land and isn’t a pushover.
— Todd Balf

2: La-La Land —used as a nickname for Los Angeles, California
Like most devoted New Yorkers who find themselves in La-La Land, the author goes through at least half of the five stages of grief.
— Alexandra Jacobs