By spending quality time together. For example, having a game night where everyone in the family and friends participate. It creates laughter and friendly competition, which are great for building positive memories.
This is a rather inappropriate topic to be shared between friends and a husband in a normal and healthy relationship. In a respectful and moral relationship, sexual acts like this are private and not something to be casually discussed among such relationships. Such discussions can make people uncomfortable and violate the boundaries of propriety.
No, that's not a common or appropriate topic among married friends. Such discussions would be considered inappropriate and disrespectful of the marital relationship.
One time, my friend borrowed my expensive video game without asking. I was so mad that I thought about telling his mom. I didn't really blackmail him in a bad way though. I just said if he didn't return it soon and start asking permission in the future, I would tell his mom he took it without permission. He quickly returned the game and apologized.
No. I've never heard of it in mainstream or popular story collections, and it sounds rather inappropriate and not something that would be widely popular in a proper literary or storytelling sense.