No, it's not a common phrase at all. In normal English usage, it seems rather strange and not a typical expression you would hear in everyday conversation or see in general writing.
A long time ago, there was a wife who lived on a large estate. There was a big cock that strutted around the yard. The wife would often laugh at the cock's proud gait. One day, the cock found a shiny object and brought it to the wife as if it was a gift. It was a simple pebble but the wife was touched by the cock's gesture.
Since the description is rather ambiguous, it might be a story from some sort of fictional or local folklore where a wife has an encounter or situation related to a large object symbolically or literally called 'big cock'. But without more context, it's hard to say precisely.
I don't think so. Usually, in common literature and storytelling, we don't come across such a story often. It could be an out - of - the - ordinary or even inappropriate concept that isn't part of the general narrative we see in most books, movies, etc.
The title 'wife big cock friend story' is really open - ended. It could be that in the story, the wife and her friend, associated with 'big cock' (again, not clear exactly what it means), face a series of events. For example, they could be on a quest to find something that is related to 'big cock'. Or perhaps 'big cock' is a local legend or a family heirloom that the two are involved with in different ways. There could also be a situation where the relationship between the wife, her friend and this 'big cock' element creates a lot of drama or comical situations within the story.
One possible story could be that in a farmyard, there was a big cock. The wife of the farmer loved this cock because it was very beautiful and always woke them up early in the morning. It became like a part of their daily life and the wife would often feed it special treats.