The trick to writing for people is, you have to be able to turn them on in your head. And know how they'd word something or how they'd inflect it.
When I was young, I had two older sisters, and since I was the youngest in my family, my mom took me around with her all the time. I was forever with her when she was having coffee in the middle of the afternoon with her three sisters. And they would talk about men. I absorbed a lot of that.