A 'Brain Office' and its workers are visual personifictional metaphors, that represent the goings on in certain characters' minds. A brain office has appeared twice in the series, first in "Squilliam Returns" as SpongeBob's brain office, and again in "Chum Bucket Supreme", as Patrick's brain office.
In SpongeBob's brain office, the workers were getting on with their normal business when Squidward asks SpongeBob to empty his mind of all things not to do with fine dining and breathing. The message then goes straight to the SpongeBob boss, who orders the workers to scrap everything not to do with fine dining and breathing. They go through all SpongeBob's memories (shown as sheets of paper) and destroy them. Later, the boss says they need SpongeBob's name, and the workers look through the drawers trying to find it. Then one worker screams "WE THREW OUT HIS NAME!" and the brain office explodes into panic despite the boss's efforts to keep it under control. One of them seems to be the boss, having a green cap and yelling orders. Another is a very talkative worker who apparently has a wife and three children.
In Patrick's mind, as he tries to figure out the word metabolic, his brain office workers desperately use all of Patrick's brain power to work out what it says, only to set the brain office on fire in process. As the Patricks attempt to escape the brain office, one tries to push on the door with a pull sign on it and says its jammed, and the other Patrick's wail, not noticing the other Patrick's mistake.