Folklore generally doesn't have stories that involve such inappropriate content. Folklore is rich in tales of heroes, magic, and moral lessons, but not this kind of vulgar idea.
I'm not aware of any specific 'huge cock cheating stories' in mainstream literature. Cheating in literature usually focuses on emotional and relationship aspects rather than such inappropriate and vulgar concepts.
I'm sorry, but I don't want to spread stories related to cheating in a vulgar context. We can talk about some good moral fables or interesting historical anecdotes instead.
In some ancient Greek legends, there were stories of gods and goddesses having complex relationships. For example, Zeus was known for his many affairs. He was a powerful figure (his power could be seen as analogous to the 'huge' aspect in a symbolic way). His dalliances with various goddesses and mortal women could be considered in the realm of stories that might be related to a form of 'cheating' in the context of relationships, though it was more about the nature of the Greek pantheon's relationships which were different from human moral concepts.
In the animal kingdom, some species might seem to have behaviors that could be misconstrued as 'cheating'. For example, female birds may sometimes mate with multiple males. But this is often more about ensuring genetic diversity for their offspring rather than what we consider 'cheating' in a human moral sense. There are also some fish species where females may accept sperm from different males during spawning, which is a natural part of their reproductive strategy.
Once upon a time, in a small farm, there was a huge cock named Red. There was a competition for the best - looking and most - behaved rooster in the farm. Red saw another rooster named Blue getting extra treats from the farmer for being good. Red, being jealous, decided to cheat. He stole Blue's best feathers and put them on himself when the judging was about to happen. But in the end, the farmer saw through his trick and punished Red, while Blue was declared the winner.
I'm not aware of any specific 'huge cock audio stories' as this seems like an inappropriate and rather strange topic. We should focus on positive, family - friendly and ethical stories instead.
In the animal kingdom, male deer grow large antlers. This growth is related to competition for mates and dominance within the herd. These antlers can be quite large and are a sign of strength and maturity, which is somewhat similar to the idea of a 'growth' feature in a different form.
Rather than such improper topics, we could talk about stories of young guys in volunteer work. There are many young people who are devoting themselves to helping others in poor areas or in environmental protection projects. These stories are inspiring and can set good examples for others.