UK who is yelled at by some nasty racists. The victim then would be absolutely defenceless in not being able to use "appropriate" language in return. I, for my part, teach such "unwholesome" language when asked by my students, and I have always also tried to pick up such language in the foreign idioms that I had been learning. Just imagine how well I was feeling when I was able to curse one of my previous employers in Chinese after they failed to pay me for my hard and honest work.

Cai ni ma!....hahahaha

Cao ni ma, do you mean? not a good thing to say.

Hahaha you are trying to get your students killed- best tell them to ignore nasty racist, not inflame the situation. Did rasputin help you with your Biblical studies, Turnoi? hahaha- all good fun.