I stumbled across this while searching for highlights of last month's D&D 40th Anniversary Blog Hop Challenge. It came up in a search for "You Bash the Balrog, while I Climb the Tree." I don't know if the songs are related or not.
I'm not advocating that you use it for your games, but I do find it amusing. Here's the lyrics.
Still, after listening to such filk, for some reason I feel like I really deserve this: