Well, this here would be the never-ending challenge, created by the amazing FreakyMentalSociety girls, A.K.A us! Yay! The rules are actually from valele's challenge, and we decided we were doing it here, and we were all collaborating.
Here are the rules:
"This isn't a story, it's my very own song fic challenge! I thought of this when I told Ada to write a song fic on one song, and that she had to do it. Anyways, I remembered how she had her own rules for an iPod challenge, and I wanted to do something like that.
The rules are that you get someone to do this with you, anyone who likes to write. Then, you each suggest a song for each other, and they have to do that song, no matter what they say or if they hate it or anything. It's potentially evil, I know. You don't have to do it with someone else, though – you can just ask someone for a song. But the whole point is that someone else picks for you – no putting your iPod on shuffle or anything, because you know the songs on there.
Okay, now that you have a song, pick a fandom and a pairing, and you're all set to write! Have fun, and don't forget to tell your friends!"
So we do that with each other, and it's never-ending, basically! Haha, pretty easy, right?