In my first job I worked with a lot of Chinese Malaysians, and I remember one time we were in the car going somewhere for lunch. We'd all been conversing in Eng

In my first job I worked with a lot of Chinese Malaysians, and I remember one time we were in the car going somewhere for lunch. We'd all been conversing in English - for context, this is in Australia where English is the overwhelmingly predominant language, and I was the only non-CM in the car - but when a couple of them started talking directly to each other they started chattering away in... something else, and others joined in it was all incomprehensible. I said something about them switching languages on me and they said, "No we didn't." And apparently they were still speaking English but when conversing more directly with each other that in the group their accent went so thick and fast it honestly sounded like a foreign language to my uneducated ear. They were totally unaware of this and were really surprised when I said I couldn't understand what they were saying anymore. Made for ongoing jokes for a month or two.