Malfannoying
"So Potter's in Remedial Potions?"
I looked up. "Yes." My eyes returned to the essays I was grading. Draco picked up the pile of graded essays and started leafing through them.
"Yours is not finished," I said, glancing back up. Apparently, he was just looking to look. He did not stop rummaging through them until I cleared my throat.
"Oh? Here." He handed the completed essays to me. "So," he said, looking at me a little slyly. "Mother says you're an old friend of Father's."
"I have told you as much in the past," I said, only thinly veiling my growing annoyance at his continued presence.
"So you and my father did a lot of things together. Went to meetings together?" he said, eying my left arm.
I looked at him. "I have no idea what you are referring to when you say 'meetings.' And, Draco, isn't it past your bedtime?"
"You know, Snape. Meetings with the Dark Lord." He looked at me expectantly, though why he assumed I'd actually answer him I cannot say.
"In exactly three minutes I am closing my office door and locking it, and you have exactly that long to get out before I do so."
"When I could stay here and bug you all night?" he put on a self-confident smirk.
"When I could either ignore that you're out past curfew or else employ some of Filch's 'old methods.'" I hid the annoyance his efforts were creating within me from my voice. Though, here he knew I must have been bluffing.
"Professor Snape, you would never lay a hand on me."
Oh, that was it! I quickly took out my wand and produced a stinging hex. His grey eyes widened as he put a hand to his cheek.
"Professor!" he sounded both stunned and outraged.
"Draco!" I mocked right back.
Reluctantly, he pouted at me and headed for the door.
"And leave that vial here."
Shooting me a dirty look, he took the vial of Acromantula venom and placed it on the nearest desk. I sighed, locking the door behind him. He was a greedy little thing, but at least he'd learned the proper value of certain potions ingredients. That was certainly more than I could ask of most of the lot. His insubordination was made somehow touching.
"Professor Snape?" he called through the door, giving it a knock.
Or perhaps it wasn't touching at all. I gritted my teeth and cast an overly-large Silencing Spell. I even half-hoped he'd keep trying to get in. Let him rot there all night and fail class in the morning. I was tempted to take three points from Slytherin, but I added them instead.