"Muddy, present your tongue". Hermione found herself complying with her captor’s demand naturally. Her stretched tongue was happy to loll free of the confines of her mouth. Narcissa placed a small white disc between her tongue studs. Hermione could feel a more concentrated version of her earlier pleasure reverberate through her body, she couldn’t help but emit a pleasured sigh. "You see muddy, good behaviour leads to special prizes, I can see that you like your treat, you will earn more if you continuing being a good girl". The extra dose of dopamine provided by the magic phrase was all part of Narcissa’s calculated plan, she knew that her student would chase the pinnacles of this drugged high with the desperation of a strung-out junkie, the trick would be to keep her in a perpetual state of wanting and needing more validation, something that her subconscious mind would now inextricably link to pleasing her Mistress.