You are dead wrong, you should be able to understand mandarin swear words, lest they are being directed at you.

No one likes to be called the "ta ma de lao wai", now am I right or am I right?

Well if I am wrong I am sure your darling lotus blossom can correct me, what was it she called me, little shit, she may be right about the shit part, but not the little....

That has never yet happened to me-I understand it has happened to some FT's; most of whom have trouble with voices in their heads, haha. The thing is this, dear boy, I wouldn't take it personally anyway-it would be shrugged off- two seconds after such a confrontation I would be most likely anguishing whether or not to add soyer sauce to my egg fried rice- would the salt content be too much? Don't be a sad sensitive little soul.