Nothing is ever that simple, but at the same time it is. In fact most of the time it's much simpler than you or I would think.
So, one day I sat on my hind, ponies on my mind. A voice spoke "Weirdness you will find, in fics of ponies and similar kind." Since then I wrote stuff, with a mite too much fluff, then I had enough!
"Fluff" in the same way what collects under the sofa is fluff.