Psychonauts Easter Egg - The Return of the Stump Joke

On your first day don't go to basic braining right away,instead go to the sealed off stump near the janitor.Press triangle near it and Raz will say "There's a hole at the bottom of this stump." which is an homage to Monkey Island 3 and many other adventure games (see Monkey Island 3).This is there because Tim Schafer, who is the maker of Psychonauts also made Monkey Island 3.