Watch The Amazing World of Gumball Season 3, Episode 12

Darwin gets jealous of Gumball and Penny's relationship. When Darwin and Gumball reveal how they'd spend their perfect day Gumball confesses that he would spend it with Penny. Darwin gets jealous and sets out to dig some dirt on Penny hoping it will split them up. Meanwhile Gumball is planning to step his and Penny's relationship up a notch... by proposing marriage!/It's Granny Jojo's Birthday and she's brought an unexpected guest to dinner. Granny Jojo has brought a boyfriend to her birthday meal and Dad isn't happy about it. He bans Granny JoJo from ever seeing Louis again. When the kids get caught sneaking Granny Jojo out of the house Dad challenges Louis to a man-off to prove once and for all who is the man of the house?!