Yukidashinigami@ though I don't speak enough japanese to confirm all of it, it's pretty accurate. I'm thinking that you're asking because when you tried singing along, the lyrics seemed completely off what they were singing in the song, right? The reason for this is because they're accurate. See, Japanese is a much more versatile language than English-- a word with the same "spelling" can be said over 10 different ways, and still mean the same thing. To add to this, Zetsubou Billy is a song that largely falls under the heavy metal genre. Assuming that you've listened to a fair amount of that genre, you should have heard many songs where what they're singing hardly sounds like "English" (those not interested in it don't even hear the words, they just hear yelling and noise!) But here's a hint for singing it: in Japanese music, there is a tendency to cut off as much of words as possible, which (ironically) adds emphasis to those words. You should particularly pay attention to cutting off the ending vowels of words, and in this song, particularly the 'u's