OK, i would not go as far as providing a precise definition for muji, simply because there is no real benefit to providing a graphic definition. it may put off some people. just say that it's a derogatory term that carries the same level of vulgarity as asshol e or muthafuker (if you can say the last two. if you can't just say that it's a vulgar term). we know that this is not true, as some people lovingly call their friends muji, but there is no point wasting time going into the idiosyncracies. these khaires don't need to know and prolly dont care either.