I think it comes down more to tone of voice than the words themselves. Most people (including myself, often) have a strong verbal sense of politeness but are pi

I think it comes down more to tone of voice than the words themselves. Most people (including myself, often) have a strong verbal sense of politeness but are piss-poor when it comes to keeping the right tone of voice. Thus, "excuse me" gets a negative connotation because it's so often said with a noxious tone of voice. On the other hand, people who are swearing are usually kidding around and know each other pretty well, so a phrase like "get the fuck out of here" is often what people say when they're joking.