is it haram to have a sex blog ;p?

Salam alaikum ;p ehehe, dont get me wrong im not saying i want to write actual events that happen to me in my sex life .. like write sex fantasies and the like but DEFINITELY fictional.. like write it in a book between me and my self or/and have a website which i will be anonymouse but the website is like piczo or something similar and i can write about sex fantasies ;$ oh and btw im a guy ;p Thank you ;p