The older islanders engage each other in a language that could well be a mixture

of Maori and Martian.  It has no resemblance to Japanese, or to any other known lingo, and until recently no dictionary existed for their isolated tongue. 

Where Yoronese came from is a popular guessing game as it is alien even to nearby islands, and Googling it turns up nada.

Most words are completely undecipherable but others are easy to handle, such as 'Doka' (thanks) or, for the even more grateful - 'Doka Doka' (many thanks) and to express profuse thanks -  'Doka Doka , Doka Doka…'  ad infinitum.

But my favorite is a word, or words, which sound remarkably like 'White'n'Day!'.

It is always uttered accompanied by an exclamation mark and I often hear it used when someone's golf ball lands in the Pacific ocean.  So I assume it is the Yoronese equivalent of 'Good Grief!' , or something stronger.   It may even be the local version of the 'F'  word.  It always raises howls of mirth whenever I vocalize it.