"Lumity" is the name of a sapphic ship between two characters from Disney's The Owl House; Luz (the main character) and Amity (side character).
The ship itself became popular basically ever since Amity was introduced, despite her being introduced as an antagonist. Through out the show, Luz succeeds in befriending Amity, and it's eventually revealed that Amity has a crush on Luz.
In a reddit AMA, Dana Terrace, the creator of the show, confirmed Luz to be bisexual (although she had already technically confirmed it) and that Amity was intended to be a lesbian.
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.