1. You scream this while you are tripping on LSD.
2. A reference to a Spongebob episode where a fish screams "THE POWER WITHIN," while presumably being on LSD.
1:
Jim: Hey Bob, how are you doing?
Bob: THE POWER WITHIN
Jim: Shit man, gimme some of that acid.
Bob: T H E P O W E R W I T H I N
2:
The Power Within
THE POWER WITHIN
T H E P O W E R W I T H I N