The term Paki which seems to offend everyone is actually used on the front page of all major newspapers where I come from. Forget about the supervisor at work, he reads the same newspapers as every other employee does. So I will have no problem using the term at work at all. Not even the Paki reading the newspaper will complain, he's has is own terms that he uses for other nationalities himself. Still no one complains
NOW THATS FREEDOM OF SPEECH.