"On A Tropical Island" joke

On a beautiful deserted island in the middle of nowhere, the following people are stranded:
Two Italian men and one Italian woman
Two French men and one French woman
Two German men and one German woman
Two Greek men and one Greek woman
Two English men and one English woman
Two Polish men and one Polish woman
Two Japanese men and one Japanese woman
Two American men and one American woman
Two Australian men and one Australian woman
Two New Zealand men and one New Zealand woman
Two Irish men and one Irish woman
One month later the following things have occurred:
One Italian man killed the other Italian man for the Italian woman.
The two French men and the French woman are living happily together having loads of sex.
The two German men have a strict weekly schedule of when they alternate with the German woman.
The two Greek men are sleeping with each other and the Greek woman is cleaning and cooking for them.
The two English men are waiting for someone to introduce them to the English woman.
The two Polish men took a long look at the endless ocean and one look at the Polish woman and they started swimming.
The two American men are contemplating the virtues of suicide, while the American woman keeps on bitching about her body being her own, the true nature of feminism, how she can do everything that they can do, about the necessity of fulfillment, the equal division of household chores, how her last boyfriend
respected her opinion and treated her much nicer and how her relationship with her mother is improving - but at least the taxes are low and it's not raining.
The two Japanese men have faxed Tokyo and are waiting for further instructions.
The two Australian men beat each other senseless for the Australian woman, who is checking out all the other men after calling them both 'bloody wankers'.
Both the New Zealand men are searching the island for sheep.
The Irish began by dividing the island into North and South and by setting up a distillery. They do not remember if sex is in the picture because it gets sort of foggy after the first few bottles of coconut whisky, but they are satisfied in that at least the English are not getting any.