Quoted By:
>Satoshi: I'M GONNA BE THE WORLD'S GREATEST POKÉMON MASTER!
>Makoto: What's THAT?
>Soji: That means you're going to become the world's greatest Pokémon Trainer, right?
>Satoshi: Nope, it's above that!
>Satoshi: It's far, far above that!
It took us 20 fucking years to get the answer
Its just a term made up by Ash.