it is duck voice:)

Take a look at this, it´s pretty interesting! http://en.wikipedia.org/wiki/Zamina_mina_%28Zangalewa% Source(s): http://en.wikipedia.org/wiki/Zamina_mina_%28Zangalewa%29

Waka is a music genre from Nigeria, there's also an old song called "waka waka". I don't know the Shakira version but she may have covered the original one which is worth listening, by the way. I don't know its meaning...