Basically a goofy ah ah existing specimen with zero intelligence and is meaningless to society. A "rayith" is a prehistoric living being that was reborn and their only goal in life is to fail at everything they do and bring shame on their family and friends. Now let's now get confused between a "ray" and a "rayith". A ray is a rayith moment. A rayith is always ray. If you are rayith, you are permanently ray.
"Dude, that was kinda ray of you. Chill. You don't wanna be compared to a rayith"
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.