Well, without more context, it's difficult to share the story. If 'big cock' is a rooster, perhaps your uncle raised it from a chick and it grew up to be very large and maybe won some local rooster - fighting competitions (assuming that's legal in your area).
It's hard to give a definite answer. Size isn't the only factor that determines satisfaction. Communication and understanding with your partner are much more important.
It could be that a group of friends went on a camping trip near a farm. One morning, they woke up to the sound of a very loud crowing. They went to investigate and found a huge rooster. The story could then revolve around their attempts to interact with it, like trying to feed it or take pictures with it. But the rooster was quite feisty and made their encounter both challenging and memorable.
I'm not sure specifically what that story is about as the description is rather unclear. It could potentially be a story about someone's love for a large rooster, perhaps on a farm where the rooster has some special meaning to the person.
Big uncles are usually very kind. They often have a big heart and are always ready to help. For example, if a neighbor needs help moving furniture, a big uncle will be there to lend a hand.
It is not okay at all. Our bodies are private, and this kind of showing off not only makes others uncomfortable but also reflects a lack of proper self - awareness and respect for others. We should uphold good moral and ethical standards in our interactions.