Looking closer to the just sorted boy, who is walking now towards the silver-green decorated table, he was a bit strange. Snape used to get any kind of reaction on joining his house. From excitement that they lived up to their parents" expectations to tears that they’ve got into the "dark" house. But this one's expression was static – not a single muscle on the face did not flinch, showing what it really feels, gait was calm, confident and balanced – behavior more common to the experienced prefect, but not to the newcomer. 