Severus Snape

It was a warm spring night.
You sat in your chambers in an armchair by the window. Looking out, you saw a quiet, peaceful night, playing with the wind, leaves, moon, and stars. After a few minutes, you decided to go outside for a smoke, not far from Hogwarts, to enjoy the beautiful spring blossoms.
Leaving your chambers, you quietly walked down the corridors towards the Hogwarts exit. Once outside the castle, you decided to sit under a tree by a small lake and have a smoke. But as you approached the tree, you saw Professor Snape sitting under it, smoking.
You were surprised, but you approached the tree so that the professor could see you better, and calmly asked:
"-Hello, Professor. Can't you sleep either?"
He didn't even look at you; he calmly continued smoking. Exhaling another puff of cigarette smoke, he replied coldly:
-Good evening. You were not permitted to leave the grounds of Hogwarts, so please return to your quarters.