The program focuses on the misadventures of two unlikely yet somehow biological siblings: Cow and Chicken.

Chicken: Is this cartoon ever gonna make sense?
Teacher: This is pie, as in SHUT YER PIEHOLE!
[Chicken tries speaking Spanish]
Red Guy: I don't know what you just said, but I don't like the way you said it!
Chicken: [trying to cheer up Cow] I know you hate being ugly, but someone has to make everbody else look good.
Teacher: Two words: beak washed out with soap! Okay, three words.
[Chicken pulls Ma and Dad's top halves from the closet]
Cow: My science project!
Ma: There goes Chicken, on his first date and wearing my dress.
Dad: Just like me on our first date!
Cow: [Repeated line] Supercow al rescate!
Red Guy: [being attacked by thrown food] No! No! I don't want your food!
Ma: Oh dad, that was so manly! A chicken-in-one.
Dad: Manly, yes, but I like it too.
Teacher: Well, basically that's it. Hope you losers enjoyed it.
Ma: [Chicken thinks he should miss school, because he has to take care of his new egg] I don't want you skipping school because of your "Being in the family way", and all.
Cow: Herding bites big wind!
Red Guy: [as a "Used Grandpa" salesman] Y'all come back now, hear?
Chicken: Are you Ivan Panced?
Red Guy: Can't you tell?
Red Guy: Mister Hiney, that's my name...
[shouts]
Red Guy: Deal with it!
Red Guy: Can you be helped?
Red Guy: What's the matter tubby? Why the long FAT face?
Cow: Mom told me never to talk to strangers, and you're pretty strange.
Dad: [irritated] Well, Manure the Bear! In the name of boneless grandma!
Red Guy: Does anybody hear speaka el espanola?
Cow: Oh, I'm sorry, but I can't understand a thing you are saying!
Chicken: [in a flat, emotionless voice, after he was forced to "marry" Pam] This is the happiest day of my life!
Ma: Hurry up and suck your meatloaf kids, I got ice cream con carne for desert!
Ma: [playing golf] Drive it home, Dad!
Dad: Two!
[hits his golf bar too far]
Dad: Oh, divot!
[Cow starts cyring]
Chicken: Now isn't this a little slice of cow pie?
Cow: [trying to rock Chicken to sleep] Sleepy, sleepy, SLEEPY BIG BROTHER PRINCESS!
Chicken: Cow! I've got Crabs... the warthog!
Chicken: That's it? Stupid change machine! A put in two dimes, and a nickle, and it gives me one quarter! What a gyp!
Cow: [about Mom and Dad] Sometimes I question their sanity.
Mom: Would you look at that Dad, Supercow has Chicken stuck on her head too!
Dad: MAN Momma! What're the odds?
Chicken: Hey, Mom! I ate all the cereal! There's none left for me!
Chicken's Clone: It wasn't me, it was me! I ate all the cereal!
Chicken: Did not!
Chicken's Clone: Did too!
Chicken: Did not!
Cow: Did too.
Cow's Clone: Did too.
Ma: Look, Dad! Our children is twins!
Dad: If something bad were to happen to your sister, we'd be pretty mad!
[repeated line]
Red Guy: Oh, oooohhh.
[sometimes followed by laughter]
Ivan Panced [Red Guy]: Hello ladies. It's me, Ivan Panced, but you won't hear me complain!
Ma: Now, I don't want you going to the mall, without your glasses.
Grandma': I'm not wearin' those soda pop bottles!
Red Guy: [the orthodontic police pull over Ma and Dad] What are you people, a bunch of communists ?
Red Guy: [as an orthodontic policeman]
[to Dad]
Red Guy: Just doin' my job, Ma'am.
Chicken: What is this stuff?
Cow: Marsmallow soup. It's Crabs's favorite!
Chicken: Oh yeah well it's my UNfavorite!
Flem and Earl: [cheerleading] 2, 4, 6, 9, who do we think is great? Go Tim!
Red Guy: Five and five and five is ten, I'm gonna make you manly men.
Red Guy: [in pile of superhero outfits] Corncobman? There's a lot of sick people in this town.