Fox & Stork

My favorite story growing up : (it has many versions, this one taken from wikipedia:) A fox invites a stork to eat with him and provides soup in a bowl, which the fox can lap up easily; however, the stork cannot drink it with its beak. The stork then invites the fox to a meal, which is served in a narrow-necked vessel. It is easy for the stork to access but impossible for the fox. The moral drawn is that the trickster must expect trickery in return and that the Golden rule of conduct is for one to do to others what one would wish for oneself.