Back at the Barnyard (2007)

Season 2: Episode 42

While trying to escape Snotty Boy, the animals run over Snotty's clown father. His dad survived, but has lost a lot of hilarity and Pig takes him into surgery. Otis disguises himself as Snotty's father to distract him while he recovers and becomes a cool dad to Snotty Boy. Only Snotty comes to love and admire Otis in a way he never did for his lame clown father. Otis has to think fast before he ruins this miserable family.