In case you didn't know, this is Snape from A Very Potter Musical. If you don't know what A Very Potter Musical is, you need to go drown in a lake. Or watch it, whichever. I LOVE AVPM so much,. and the portrayal of Snape in it is hilarious. This would be after the grvaeyard scene when Snape has cut his hand off, and comes back with hook-hand. Harry knows it must have been Snape in the graveyard, but Dumbledore said that Snape told he lost his hand in an accident. I don't know why, but his face in this shot is awesome and adorable.