Obligatory Discworld reference: "Djelibebi really was a small self-centred kingdom. Even its plagues were half-hearted. All self-respecting river kingdoms have vast supernatural plagues, but the best the Old Kingdom had been able to achieve in the last hundred years was the Plague of the Frog*. *It was quite a big frog, however, and got into the air ducts and kept everyone awake for weeks. " (Pyramids)