Gumball just falsely accuses his friend Banana Joe for chewing on his pen, Gumball and Darwin later want to get revenge, only to find out it was Darwin's pen Gumball was chewing on the whole time. So they basically destroyed his things for Gumball's own actions. Gumball is NOT like this in previous episodes. The previous season showed him to be a kind helpful young man, while the next season(s) showed him to be a rude and sarcastic pain in the neck. I wish I could get back the first 11 minutes I wasted watching this episode.