rat spill n. the accidental importation of rats to a rat-free island (or, rarely, to any rat-free piece of land). (source: Double-Tongued Dictionary)
Further reading
In a sweaty letter to a friend while vacationing on the island of Elba, poet Dylan Thomas wrote colorfully and expressively about a terrible heat wave, complaining that, among other things, “My brains are hanging out like a dog’s tongue.” This is...
Someone who spends a lot of time reading books is known in English as a bookworm. The Hungarian and Estonian terms for such a person translates as “book moth,” and in Indonesian as “book flea” or “book louse.” In Spanish, they’re called a ratón de...