Draco casts a curse on Hermione (or gets an older student to) which compels her to always refer to people as is correct for their position relative to herself. It is generally believed, by those who've heard or read of the spell, that it calls upon The Sapience of Magic, Itself, or The Great Will of the Cosmos, or whatever, to get the titles right. What it really does is tap into the subject's (and not the caster's) conscious and subconscious, combined with a very limited truth compulsion, to make the subject be honest about his or her beliefs.
Thus, Hermione can't speak of or to Draco without insulting him, whether through rude words like git, or even humourous translations of his name, like Faithless Vermin (Malfoy -> Bad Faith -> Faithless, and Draco -> Dragon -> Wyrm -> Worm -> Vermin).
She'll probably still call Snape 'Professor Snape', unless her subconscious notes that he doesn't really teach, is therefore not a teacher, and thus is not a professor. I doubt she'd have that reasoning, but a sufficiently skilled writer could make it believable. She might be compelled to insult him while calling him Professor, though.
Optionally, Hermione starts to be very respectful when referring to Harry, perhaps calling him 'Master' or My Lord'. That could mean a lot of things, one of which is that she is a sub, and wants Harry to dominate her - it could just be that she strongly believes in Life Debts, or has some other reason, though.
Either way, most people think that 'Magic, Itself', or some other such concept, is telling her how to refer to people, and this affects how they behave.
Due to suggestions on Caer Azkaban (Yahoo group, I think you need to be registered to read it), Hermione eventually can resist the curse, but it's never truly cured, and tends to flare up when she's under stress.
Could be crack, a subplot in another story, or the Point of Divergence of an AU, with the Butterfly Effect doing strange things to many later events.
Thus, Hermione can't speak of or to Draco without insulting him, whether through rude words like git, or even humourous translations of his name, like Faithless Vermin (Malfoy -> Bad Faith -> Faithless, and Draco -> Dragon -> Wyrm -> Worm -> Vermin).
She'll probably still call Snape 'Professor Snape', unless her subconscious notes that he doesn't really teach, is therefore not a teacher, and thus is not a professor. I doubt she'd have that reasoning, but a sufficiently skilled writer could make it believable. She might be compelled to insult him while calling him Professor, though.
Optionally, Hermione starts to be very respectful when referring to Harry, perhaps calling him 'Master' or My Lord'. That could mean a lot of things, one of which is that she is a sub, and wants Harry to dominate her - it could just be that she strongly believes in Life Debts, or has some other reason, though.
Either way, most people think that 'Magic, Itself', or some other such concept, is telling her how to refer to people, and this affects how they behave.
Due to suggestions on Caer Azkaban (Yahoo group, I think you need to be registered to read it), Hermione eventually can resist the curse, but it's never truly cured, and tends to flare up when she's under stress.
Could be crack, a subplot in another story, or the Point of Divergence of an AU, with the Butterfly Effect doing strange things to many later events.