[Busy, indeed. He doesn't even notice that Jack's shown up or that Jack's behind him, so when he feels that chill on the back of his neck he shivers almost violently and jerks his head up, tilting it back and being completely unsurprised by what he sees.]
Jack! [His expression is mildly confused.] What does chocolate have to do with snow? [He's dropping his pencil though and giving Jack most of his undivided attention. No. Not too busy.]
Action
Jack! [His expression is mildly confused.] What does chocolate have to do with snow? [He's dropping his pencil though and giving Jack most of his undivided attention. No. Not too busy.]