How about this:

<Insert Farmer Name> Is fishing and sees a shadow near the bottom. Should he <she>...

A: Swim away. That looks like one hungry shadow!

B: Get a closer look.

Ending 1 - The villager sinks beneath the waves and is never seen again.

Ending 2 - The villager discovers a whole bed of giant crabs! 3000 is added to the villagers' food!

...Sort of a take on the face in the bushes, eh?