Yeah, they have a clique by their own.
They like using some of their 'native-phrases' which only they
understand, which some can be funny at times though.
There's this guy who came to me and asked, "Wo neng jie liang jiao
qi ma?" And i thought, 'liang jiao qi' = twenty-seven cents? The
confusion continued for a moment more before he said in English,
"Protractor". 
