In less than a month, an animated music video called "Dumb Ways to Die" has somehow racked up over 30 million hits on YouTube, and been downloaded over 10,000 times on iTunes. Which is weird, because it's actually a public safety ad for Australia's train system. The lyrics list a bunch of idiotic ways you could get yourself killed . . . like by eating a tube of Super Glue, or setting fire to your own hair. And apparently people find the song kind of catchy.