How about your Milf or Gilf fantasies?
As I am rather visual about Milf and Gilf erotica my mind is very productive and creative about putting a sexy story line in my mind. Usually about an older lady with a younger man and how they "accidentally" see each other naked or how one of them is slowly seducing the other. It is never about the sex itself but mostly only about the event leading up to it.
It can drive my rather crazy up to the point where I have to actually write the story that is my head or otherwise I would lose myself in it. I have this several times a year and ofcourse it has to do with me not having enough real erotic encounters myself but on the other hand I am glad that I have such a creative erotic mind to fill in the gaps.
So, how about yours?