Two or three brothers live together (with their mother). One of them makes stupid actions like (all or some of them): lets free animals that got into a snare but kills his mother; cuts off the legs of domestic animals or flays them; thinks that a certain place on a head of a baby is a tumor, sucks baby's brains out; cuts a cloth into pieces and ties them to reeds of to branches of a tree; hearing a murmur of water throws food into the water; tries to build a hut not on a river bank but in the river