No one owns words. The simple rule seems to be that anyone can be hypocritical about things in order to try to allow themselves a right others are denied. It's just that some are tolerated more by others if there seems to be something self referential about their speech. Either a word is offensive or it is not. One can't have it both ways. In any case it's not the words, a sound is just a sound, it is how they are used, how they are meant, that can be considered offensive, or not.