Since such stories are not common or appropriate in general, it's hard to say there are real moral lessons. But if we were to force an interpretation, perhaps it could be about the consequences of asking for inappropriate or self - centered wishes.
In reality, we should look at traditional witch - related stories for moral lessons. For example, in stories where a witch rewards kindness or punishes greed. These are far more valuable moral lessons than any that could be contrived from such a strange concept as 'witch grants wish for long cock'.
If we assume a more positive spin on this rather odd concept, it might be about the power of the witch to shape things according to one's desires, and the responsibility that comes with making wishes. But again, this is really stretching the idea given the nature of the concept.
Rather than specifically looking for such a story, we can explore stories where witches grant more positive and inclusive wishes, like granting wishes for good health, wisdom or the ability to help others. There are countless folktales around the world with witches and their benevolent or malevolent wishes that are far more interesting and appropriate.
As I don't know the specific content of these stories, it's hard to say for sure. But generally, stories often carry moral lessons like being true to oneself or the importance of kindness.
If we assume there are such stories, one moral lesson could be about self - acceptance. That regardless of one's physical attributes, self - worth should come from within. Just like a person in such a story could learn to not let a physical aspect define them.
One possible moral lesson could be about not judging by appearances. The beast may look frightening, but it could have a good heart. And the witch, though she has magic, may not always use it for bad purposes. So we should look deeper into people's (or characters') true natures.
One possible main element could be the interaction between the character who makes the wishes and the genie. If the 'long cock' is a special item, for example, the wishes might revolve around it. Maybe the character wishes to enhance the power of the 'long cock' or use it to achieve something extraordinary. Another element could be the consequences of the wishes. Every wish has a price, and in these stories, the consequences might be directly related to the 'long cock' aspect.
Another lesson is about not being too trusting. In the story of the monkey and the crocodile, the monkey trusted the crocodile too much at first. But the crocodile had bad intentions. So, we should be careful while making friends and not trust blindly. In general, Panchatantra stories are full of such life - lessons that are relevant even today.
One moral lesson is about the importance of humility. In many stories, like when Tenali Raman deals with the boastful scholar, it shows that being overly proud of one's intelligence or status can lead to embarrassment. Those who are humble, like Tenali Raman, are able to use their wits more effectively.
In many long English fables, like 'The Lion and the Mouse', the moral is that even the small and weak can help the powerful. The mouse, which is tiny compared to the lion, manages to free the lion from a trap. It shows that no one should be underestimated.
In many English fable long stories, one common moral is about the importance of hard work. For example, in 'The Little Red Hen', she does all the work of growing and making bread by herself because the other animals are lazy. It shows that if you want something, you have to put in the effort.
Another lesson is about respect for the environment. Trashcan stories often highlight the amount of waste we produce. If we see a story about an overflowing trashcan in a city, it reminds us to reduce, reuse, and recycle to keep our environment clean. It makes us realize that our actions have consequences on the planet.