Just a hunch, but his fingers show three, so I'm thinking of the three giants or the riddle-contest with Gollem. I take it this is the "night to remember" scene; I like it a lot, this really looks like they're having a really good time remembering the whole hobbit adventure.
Thank you. I was thinking of the three trolls indeed! I'm not sure I had a scene in mind but I expected they caught up for a smoke and a drink quite a bit in between the Hobbit ending and LOTR starting