I have always wondered what those little kids were saying. I knew it was an anti-war song, so I figured they were some Vietnamese kids singing some Vietnamese chant. And I've always wondered what wan-ee-oh-ma was and WHY you'd want it. So I asked my sister and she laughed and told me (after telling the rest of my family what I had thought) that I had been singing it wrong for years. (But we still sing it my way)