yes, yes, we've all heard the stories about pc gorn mad, but we don't usually describe someone as "un-pc" just because they talk about Christmas or because they sing bah bah black sheep.
The people who are usually described by this term tend to be those who have made remarks that others consider to be offensive. Am I alone in wondering why a propensity to upset and offend people is considered by some to be such a virtue? Please enlighten me! What is so great about being "un-pc"?
(and yes, this is a thread about a thread, in case anyone is wondering)