A lighthearted and subtly derisive expression used to point out a sudden and profound shift in a person’s behavior, when someone does something entirely out of character.
Suddenly, after a lifetime of being late to everything, I found myself arriving solidly fifteen minutes early to all of my appointments, so I began to imagine I may be just one of the many folks who are channeling aliens!
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.