The Golden Rule

Harlan: "What did you learn in school today?"
Joel: " Respecting yourself, Respecting others, Respecting the envirnment [sic]."
Harlan: "Oh? What can you do to respect others?"
Joel: "Don't do mean things to babies, or they'll grow up to think that's the right thing to do."
[...]
Joel: "Don't kick a baby in the face."
Harlan: [suppressing laughter]
Joel: "Don't poop on a baby's head."
Harlan: [unsuccessfully suppressing laughter]