The Amazing World of Gumball - Season 3

When Gumball and Darwin discover his diploma is fake, Principal Brown is determined to keep their discovery a secret. He offers them all sorts of "incentives" to keep quiet but the truth is they really don't care whether the diploma is real or not. Mistaking their disinterest as "playing hard to get" Principal Brown resorts to increasingly desperate measures to ensure Gumball and Darin play ball.