Salad
Doyle: I don't want you to eat salad. Salad is junk food.
Daddy: No, salad is the opposite of junk food.
Doyle: No, cookies are the opposite of junk food.
Daddy: Actually, cookies are the epitome of junk food.
Doyle: Cookies aren't the enemy of junk food, salad is the enemy of junk food.
Mummy: Yes, salad is the enemy of junk food.