> It's like the way they eat in Ngeraus (where food is scarce): as soon as they get to like or enjoy the food, it's gone.
Just as something becomes popular, it becomes unavailable. Ngerraus is a small village in Ngchesar (central Palau). The idiom suggests a person who begins to feel hungry just as the food runs out. The reference is to the meager food resources of a small village. In contemporary Palau the idiom may be applied to some popular import that soon disappears from the shelves of the stores.