A mental state of being that is similar to being high or actually being high where one envisions happy images.

1. Blue Monday is the most depressing day of the year, calculated by Dr. Cliff Arnall, a researcher at the University of Cardiff's Center for Lifelong Learning.
Factors used to calculate the date included weather conditions, debt level, time since Christmas, time since failing our New Year's resolutions, low motivation and feeling the need to take action.

In 2005 the date was calculated as January 24th, in 2006 it was January 23rd, and in 2007 it was January 22nd.

2. A song by the hard rock band Orgy from their album Candy Ass.

You know when you see someone and think, "wow, they're in their own world." Well that world is la la land.

A place out of touch with reality

The term either refers to Hollywood, Los Angeles or a state of mind synonymous with Hollywood that is out of touch with reality, focusing on dreams, fantasies or frivolous endeavors.

To be zoned out or spaced out. To be in a sort of semi-concious state until snapped out of it. Usually by a slap across the face or a hand waving around in front of your eyes.

1. Los Angeles, California.
2. A state of unconsciousness
3. A pop song by singer and actress Demi Lovato.