Since I don't know the exact 'son in law cock story', it could potentially be a story that involves the relationship between a son - in - law and some sort of situation related to a rooster. Maybe in a rural setting where a son - in - law has an encounter or experience with a cock, like in a farming or village story.
I haven't come across it as a well - known story. It could be something very specific to a small group of people, like a family's own tale that they tell among themselves, or perhaps it's from a very niche area or community where not many outside are aware of it.
A non - erotic story could be that they are attending a historical drama. The mum is interested in history and wants to share this with her son. They watch the play, and the son is fascinated by the historical events depicted, asking his mum questions during the intermission. It's a story of learning and family bonding.
I'm not sure specifically as this seems like a rather strange and uncommonly known title. It could potentially be about the wives in Westchester and something related to a son, but without more context it's difficult to say.
In a more symbolic sense, 'big cock' could represent something like pride or over - confidence. The dad might have had too much of it and made a big mistake that affected the son. For example, the dad boasted about a business deal that he wasn't fully prepared for, and it failed, causing financial problems for the family and disappointment for the son.
First, if it's just a stupid joke among peers, you can have a conversation with those involved about appropriate language and respect. Tell them it's not okay to use such vulgar terms in relation to your son.
A young son might be living on a small farm. One day, he decides to raise a cock as a pet. He builds a little coop for it and takes care of its every need. The cock crows every morning, which at first annoys the son but later he gets used to it and even starts to find it endearing. The cock becomes a unique part of his daily life.