There is a creature in Estonian mythology called
Old Devil, who regularly gets tricked by various characters, one of whom is a clever slave, appropriately called Clever Hans. My favourite story is the mix of fairy tale types 1135 and 1137 in the
Aarne-Thompson classification system and it goes as follows...
Once upon a time Clever Hans was tasked with watching a furnace on New Year's Eve. To pass the time, he decided to divine his luck by
pouring molten lead and he put several pieces of lead to melt in the furnace on a pan. As it happened, he was being watched by Old Devil, who could not help his curiosity, came out in the open and asked what he was doing.
"Oh, nothing much. Just fixing up some eye medicine."
"But your eyes are fine."
"It's not for sick eyes. It's for making them see even better, so I could see a mosquito five kilometers away."
"Could I have some of it? I always need to watch out for St George's puppies (wolves)."
"Sure, why not. Bring me a hat full of gold and it's a deal."
Old devil was back with the gold just by the time the lead had melted. He gave it to Clever Hans and asked him, "By the way, what's your name? Maybe some of my relatives might want some medicine and I would like to know who to recommend."
"My name is Self," said the "eye doctor".
"Weird name. It's the first time I have heard it."
"Yes, it is indeed somewhat rare, but now lay on this bench and I will tie you down, so that none of the medicine will spill."
Old Devil did as he was told and made his eyes wide open, so that they were like small saucers, and then Clever Hans took the pan and poured the lead in Old Devil's eyes. The poor devil jumped up and ran out of the door, still tied to the bench, screaming, "Help! Help!"
His relatives came running and gathered around him.
"Who did it?" asked the devils.
"Self did it," cried Old Devil.
"Well, if you did it yourself, why the hell are you crying for help," laughed the devils and went their way.