The first reaction he gave to his thoughts being interrupted was to purse his lips in annoyance. He was not pleased by this. This was followed by a clenched jaw, and then it was unclenched. The features not covered by his hand smoothed and all traces of annoyance were gone from his face as his blue eyes leveled on one Severus Snape. Slytherin. Seventh year. Proficient in Potions and spellwork. Unfortunate in looks perhaps, and holding a sour demeanor, but otherwise? Acceptable. Still, he studied Snape a moment more before making his decision known.
"By all means, feel free to join me. I do not foresee you annoying me with useless questions and idle gossip," he said in an exasperated tone, indicating he had to put up with such things more often than he cared for. It was about then that his ears picked up on carousing in a nearby aisle and a rather sadistic grin appeared very briefly before he pushed back. "Excuse me a moment, please." He stood and quietly approached the aisle and turned down it, speaking firmly and loudly, announcing their names for those nearby to hear and admonishing for public displays of affection in improper venues, such as on school grounds and in the library. House points were deducted - Hufflepuff and Gryffindor - and he waited as they scurried away before returning to sit down and take up his quill.