This is a pretty simple one. You post the lyrics of a song, and make sure they are accurate lyrics (and don't just link them), and the next person changes those lyrics, then posts their own, ad infinitum. You can post a full song, but preferably just post your favorite section. Use a smaller font size as to not to load up the page and please don't post lousy songs unless you're willing to have them ridiculed.
If you need an example:
Bob Dylan's "Blowin' in the Wind"
[sub]How many roads must a man walk down
Before you call him a man?
How many seas must the white dove sail
Before she sleeps in the sand?
Yes 'n' how many times must the cannonballs fly
Before they're forever banned?
The answer my friend, is Blowin' in the Wind
The answer is Blowin' in the Wind[/sub]
Becomes:
[sub]How many times must I wash this shirt
Before it takes out the stain?
How many hours must it stay in the tub
Before I pull out the drain?
Yes 'n' how hard must I scrub
Until no dirt remains?
The answer my friend, is written on the Box,
The answer is written in Korean[/sub]
Mind you that it shouldn't suck, mine is just an example.
Change the lyrics of:
Led Zeppelin's Stairway to Heaven:
[sub]There's a feeling I get when I look to the west
And my spirit is crying for leaving
In my thoughts I have seen rings of smoke through the trees
And the voices of those who stand looking
Woe oh oh oh oh oh
And she's buying a stairway to heaven[/sub]
All I've got right now is a spin on the Beatles' chorus line from "Paperback Writer", in which case it says "Take the back right turn". That's what I actually thought they were saying when I was a kid.