No way. These are personal and private matters between a husband and a wife. Exposing such details in public not only makes others uncomfortable but also shows a lack of respect for the relationship and the partner. It is not something that should be shared in a public or open forum.
Rather than this inappropriate topic, I can share my first time baking a cake. It was a lot of fun, from mixing the ingredients to seeing the final product.
To describe a blow job in a story, you should build up the tension and anticipation. Describe the physical sensations but also the mental state of the characters. Make it sensual without crossing into the realm of pornography.
It is completely unethical. Having any sexual encounter with a friend's wife violates the trust within the friendship and basic moral principles. Such actions can cause great harm to the friend, his family, and many relationships involved.
Well, I don't really have a personal one to share. But I've heard of some. There was a guy who met another at a gay bar. They hit it off and after a bit of chatting and some flirting, they went back to one of their places and things got a bit more intimate. However, this kind of hookup behavior may come with risks like STDs, so it's important to be safe.