He would be an imposing partner. Without a doubt he would be able to quiet her over-active mind and command her attention. She already viewed him as an authority figure, so it wasn’t a stretch to imagine being sexually submissive to him. She supposed their past experience as teacher and student added an unexpected element of kink, but she was an adult, dammit. If she wanted to bend over for her long-ago-now-retired teacher, she could -- there was nothing wrong with them pursuing an adult relationship. Oh, and his presence. She shivered lightly as she tried to imagine him giving her carnal orders in his imperious voice, his impenetrable dark eyes commanding obedience... His deft slender fingers tying ropes to secure her wrists, unbuttoning her blouse, slipping beneath her hemline... Hermione flushed with arousal as she slipped her own fingers into her underwear. As she stroked herself, she tried to imagine what it would feel like to have his fingers inside of her, his cock... What would it be like, she wondered? She imagined long and thin to match his tall thin stature but she knew they weren’t necessarily proportional. Maybe it would be short and thick. Or short and thin. Or long and thick. It hardly mattered, really. After all, Zach had been impressively endowed and yet the sex had been remarkable only in its utter lack of remarkability. Far more important than Snape’s size was how he used it.  And how he used her.