When Gretchen kicks the CD player in her boyfriend's face.
Karen revealing her "talent".
This exchange:
Janis: There are two kinds of evil people: People who do evil stuff and people who see evil stuff being done and don't do anything to stop it. Damian: Does that mean I'm morally obligated to burn that lady's outfit?
Cady's mother's triple take when her husband displays a complete ignorance of what being grounded means.
This exchange:
Karen: So if you're from Africa, why are you white? Gretchen: Oh my God, Karen, you can't just ask people why they're white.