A person who is considered the Greatest of all time in many major industries.
Josue was considered the Goat of Goats when he achieved a higher NFL pass completion than Dree Brees and beat Michael Jordan and Lebron James in a 1on1 basketball game.
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.