Schoolhouse Rock!

Backup singers:
Conjunction Junction, what's your function?

Main Singer:
Hookin' up words and phrases and clauses.

Backup singers:
Conjunction Junction, how's that function?

Main Singer:
I've got three favorite cars that get most of my job done.

Backup singers:
Conjunction Junction, what's their function?

Main Singer:
I got "and", "but", and "or". They'll get you pretty far.

[a tall girl and a small boy are shown standing next to each other, unequal in height]

Singer:
[singing] Girls who are tall can get taller,

[the girl grows taller until her head reaches the ceiling. She looks down smiling at the boy. The boy looks up at the girl and starts giggling]

Singer:
[singing] Boys who are small can get smaller,

[the boy who is still laughing shrinks, looks up, and points at the girl. The girl frowns and then starts growing again. She grows right through the ceiling until only her legs and sandals are seen]

Singer:
[singing] Till one is the tallest,

[the boy who is still laughing, looks up at the girls legs, and shrinks to a speck. The girl lifts her foot over the boy]

Singer:
[singing] Another's the smallest of all.

[the boy stops laughing and looks up at the bottom of the girl's sandal in fear. The girl stomps on the boy causing the room to shake]