"15 Survivors" joke

A plane crashes on a desert island, with 15
survivors: 3 Italians (2 men and a woman), 3
French people (2 men and a woman), 3 Germans (you
get the picture), 3 Greeks and 3 Brits.
Six months later....
One Italian man had killed the other and was
living with the woman.
The French had a delightful menage a trois.
The Germans had established a strict
rotation: Hans on odd days, Franz on even.
The Greek men were living together and had
the woman doing the house work.
And the Brits. .. were still waiting to be
introduced to each other!