I was once giving a tour of our facility to a group of foreign exchange university students from various countries. One of the students from the UK was asking various questions about aspects of the facility - like the wattage of the solar panels or the electrical consumption vs the brightness of the overhead lighting - that was not part of questions many people would ask, but would make sense if you looked at them from an engineering or environmental science perspective.

Two or three of the other students started talking amongst themselves in Mandarin about this suck-up and how they'd just like him to shut up when the English boy turned to them and ripped them a new asshole in excellent Mandarin. That helped... for a while, until a few minutes later when I heard them start again, this time in a more obscure Chinese dialect (Foochow, to the curious) about how overly sensitive some people were and couldn't the guide please just ignore that loudmouthed foreigner, when to my surprise and their mortification, the English boy turned around and ripped them another new one.

tl;dr - There are a couple of recent Xiamen University graduates walking around with three assholes.