I did this a couple years ago, when I was on break from school one year.
I was writing a short story when I learned about this. I finished it up withen a week and then wrote the Nano story in the remaing three. I finished with a couple days to spare. Basically, I decided I was never going to publish it and made it a cheesy, fun quest story that ripped off everything. I had copyrighted characters all over the place, stuff stolen from a hundred sources, somewhat verbatium. My characters were stock and the story was trite. But I had so much fun doing it and my characters seemed to flow so well. But it was funny, went quickly and I wish I could do anything else that easily. I eventually edited it and printed it out for my friends to read. So far the people I’ve showed it to have enjoyed it, but I’d never think of publishing it.
A year later, I had started school and began another project, a parody of fantasy, except this time without using copyrighted characters. It was still going to be absurd, mocking cliches of the genre, but I just didn’t have time. I keep meaning to go back and work on it some more. Too bad. I got off to a good start
A small sample of the fantasy one, from the first chapter.
"The Old Ones were, the old ones are and the old ones shall be…oh, wait, wrong legend…here we go…. Once, a long time ago, in a tiny village hidden deep within a beautiful, peaceful valley in the lonely mountains, a child was born. As he grew up, he showed great strength, compassionate nature, tolerance and kindness towards all, wisdom beyond the years of even the oldest men. He was obviously a very special child, the kind that grows up to be a hero and save the world from evil. Many believed that he was the one foretold by ancient legends to lead the world into a new golden age and banish evil from earth forever.
Having no father, one day he went to the town well to get some water for his mother, who was dying of the plague. As he near the well, he tripped, bashed his head on the side and fell into the well. Soon thereafter, his mother succumbed and so did the rest of the village, likely due to an illness brought on by contaminated well water. An overturned torch burnt the village to the ground not long afterwards, leaving nothing but ashes.
This story is not about him."
There’s more, but I’ve only got the first chapter.