Yup - as dacro said it was you and rushlight who drew me in to the ship with your wonderful Snarry fics - thank you! I can't wait for Portus!
"Potter! Stay after!"
Harry rolled his eyes and tried to contain his cock's delighted twitch at the melodious voice. Nagini's attack had only enhanced the deep, velvet tones and Harry could come just listening to Snape lecture. He looked up as the door closed behind the last student.
"Did I do something wrong, Professor?"
Snape advanced on him, step by step, an unfamiliar gleam in his eye. Harry slid backwards until he was pressed up against the dungeon wall. Potion-stained fingers reached toward him, slipping between the edges of his shirt where a button had come undone. Green silk, the exact color of Harry's eyes was drawn out and he could feel his camisole tighten across his back. His prick spasmed with ecstasy.
"What it do you call this, Potter?"
Harry grinned, maybe Hermione was right about their professor's preferences. "It's silk, sir, and matches the knickers I'm wearing."
Snape's eyes narrowed, but he stepped close enough for Harry to feel the heat of his body. "You are a cock tease, Potter."
Harry almost fainted as all his blood pooled in his prick. Sweet Merlin, this was even better than the fantasies he'd been wanking to. Keeping his eyes looked on Snape's, Harry reached up to move the hand at his chest down to press it to his cock.
"Does that feel like I'm teasing?" Harry leaned forward to rub against the taller man, loving the feel of silk caressing his skin. "And if you like the knickers, I've got a little black skirt that barely covers..."
Suddenly pressed up against the wall, Harry sighed into the heat of Snape's mouth as those slender fingers stroked him and gave himself up to erotic overload.
Seemed Snape didn't mind what Ginny called his deviance!