I'm Blue, Da Ba De Da Ba Di
If that were me, I would Die

The story:

I was singing Kareoki at a friend's party, and I chose that song. I was singing along all fine and good, and I got to that part, and read the screen and bust out laughing. I finally stopped laughing long enough to explain to my friend what I had been singing the whole time since the song came out was totally wrong, and she bust up laughing, and the story got passed around the party.