Shopkeeper: [Homer has agreed to purchase a Krusty doll for Bart's birthday] Take this object, but beware it carries a terrible curse!
Homer: Ooh, that's bad.
Shopkeeper: But it comes with a free frogurt!
Homer: That's good.
Shopkeeper: The frogurt is also cursed.
Homer: That's bad.
Shopkeeper: But you get your choice of toppings.
Homer: That's good!
Shopkeeper: The toppings contain potassium benzoate.
[Homer looks puzzled]
Shopkeeper: ...That's bad.
Homer: Can I go now?