The swirling snow fell on the soldier's shield,
covering the symbol of Hrothen's Hope.
The swirling snow fell on the dwarf's black beard,
and melted into the darkness.
-opening poem of Hrothen's Curse, a dwarven tale
There are reports of a monster that lurks in the tops of trees and drops down on unsuspecting people. It causes them no damage but it frightens them with a hide-like face with big dead eyes, drooling and barking like a dog while unsuccessfully attempting to have intercourse. The PCs investigate and find that it is the local village moron that is doing the spelunking in the woods. How can they explain this otherwise pleasant and merry man that it is wrong to put on a mask, drop down from trees and attempt intercourse with relatives and neighbours.