I think every country can agree the french are the most annoying nationality in the world.
I'll try to stay polite but I've to make an effort not to insult you.... smeg off.
I'm french and the most annoying players I've heard are kids (from all countries), and americans... well... from their accent, those who are from... I don't know... they talk like gangstas. I'm not racist but... well... they are the rudest players I know.
Of course I also came across a lot of french morons but french and english are the only 2 languages I can understand so I can't really tell about others, except by the tone of their voice.