It is such a useful term, although nasty, that it seems to have varous meanings depending on country etc. And we just hate giving up perfectly descriptive terms, whether they are nasty or not. Once we have a word that perfectly describes a phenomenon, we don't want to get rid of it. And just like Oreo seemed to spread to Apple and Banana, I am sure that something like "PP" has spread to other cultures. And they are all words that sneer at others. Probably the worse of that ilk is "wannabe." I don't think a person could use it in a respectful manner, because it is a disrespectful word. All of them suggest that a person is not OK the way she or he is..like saying Obama was not Black enough. Someone is not Hawaian enough, or Native American enough or really truly Irish enough or being Irish-American is not good enough and has silly rituals and costumes associated with it. Like we should get together on St. Patrick's day and read the Book of Kells or something and only drink the purest of meade. Oh well, not for me.   mg