It is unable to understand the Chum Bucket's advertising sign and cries as Patrick comforts it since he couldn't understand either.
"SpongeBob You're Fired"
Patrick eats some of Sandy's unknown toxic waste and a miniature version of himself grows on his forehead.
When SpongeBob says that he is going to find a new job, Patrick's forehead insults him calling him a loser that will never keep a job, so an angry Patrick punches him for his words at his friend and he is left dazed.
It appears this attitude was forgotten, as it ate SpongeBob's cooked snail food at his house and didn't insult him. At the end, it is seen with Patrick at the Krusty Krab eating a krabby patty.
In the episode "Patty Hype," SpongeBob asks Patrick why he is angry. Patrick replies that because he cannot see his forehead.