Birdz/Funny

From the migration episode. Abby's first words are "Big Butt". And her mom's proud of it.
From the father-and-son campout episode, Sleepy trying to say that Eddie has a cool dad too:

Sleepy: He may not exactly be cool, but one thing's for sure: He's got...

(baseball bat cracks)

Morty: I got it! It's mine!

(Morty jumps up to try and catch the ball; it hits him in the head and he Face Faults)

Sleepy: He's got really big feet!

Some really judicious cutting makes for hilarious Mad Libs-style dialogue during Eddie and Morty's scavenger hunt. They do it several times:

Eddie: "Ancient as the earth itself." It's easy! They're—

(cut to Betty and Steffy at home)

Betty: —your father's underwear!

Later on:

Betty: And since it's almost lunchtime, why don't you gather the tools while I cook us up a nice, juicy—

Eddie: —fossilized rock!

After misinterpreting Miss Finch's comment on his beak, Eddie has a nightmare about being a Frankenstein's Monster type creature who is being pursued by Torches and Pitchforks. The dream ends in this funny exchange:

Monster!Eddie: You know what they say — big beak, big heart.

Morty: Yes. He speaks true.

Betty: Should we judge him not for the size of his beak, but for the strength of his character?

Steffy: No. GET HIM!