>I had a feeling that it was an urban legend, but just wanted to give it a shot. The whole idea of "don't worry - be happy" is such a preposterous call for irresponsibility, walking blind and welcoming any trouble that may come. The simple fact of sending yet another copy of this legend out into the world made me feel a hunch of why is it still being circulated.
>

You told me before, but what does the Serbian word lala mean? I thought they were people who would think that way.

But if we really want to look for a justification of the phrase, we should talk to some caribbean people. It doesn't come naturally to Americans. I don't know about Serbs. Maybe it's like la dolce vita.