5. Apples

A: Why are some apples green and others red?

B: Won't the green ones turn red later?

A: No, I think they will always stay green.

B: Then they're just different kinds of apples.

A: But what makes them different?

B: Their genetics, I guess.

A: What if a long time ago someone colored apples red?

B: Then why are there green ones?

A: Because the painter made a mistake.

B: What do you think happened to that painter?

A: The apple queen probably chopped off his head.

B: I think you've seen Alice in Wonderland too many times.