An 18 year old with a strong fetish

I am John Doe and ever since I read about I have been hooked. It is probably the ultimate taboo. While I would never act it out in real life I can try to live it out in my stories. I can make my mother or sister or aunt any one or any way I desire. After writing such a long and work intensive story I decide to get back to the basics and start on a new one. I decide on a nice and easy story with classic tropes and not a lot of creativity required. As I sit at my desk and pull out my hidden story idea notebook I use my brand new pen to write about my favorite subject.