Husband (mother) understands that his stupid wife (her son) can report about certain deeds of the family members and inflict a severe punishment. The fool is put into a hole (barrel, etc.), covered with a skin and the domestic fowl is let to pick up the grain above it. The fool takes the knocking for the attack of the birds, the rain of stones, etc. See motif m39a5a
A woman plants fish in the field where her husband is sure to plow them up. He finds them and believes that the fish got there by itself. People take him for mad.