Nihilistic song. The only lyrics are:

I don't care about this world
I don't care about that girl


On a small scale, the Lots-O' Huggin' Bear from Toy Story 3 is a Nihilistic character. He has no beliefs, other than hatred for all humans. A famous line of his is: "I didn't throw you away, your kid did. Ain't one kid that ever loved a toy really. Chew on that when you're at the dump!"