Ahahaha, what a coincidence, just listened to it a couple of minutes ago. Its from the Bassnectar remix of "The Pixies - Where Is My Mind"
http://www.youtube.com/watch?v=JUXsWcwjwvw
There is a theory wich states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable.