Journey to the Center of Cow Cow and Chicken : Season 2 Episode 16

Chicken turns 11, and is allowed to operate the food catapault. So he feeds Cow with pork butts, but when his sleeve gets caught in the catapault, he ends up getting swallowed by Cow. With that, Mom and Dad take her to The Red Guy, who tries to get Chicken out of Cow's cavernous abdimen.