The Hobbits are outraged they aren't in the next picture...
Old Man: Were those just two swallows carrying a coconut on a string?
Or...
Theoden: Shh, don't look, maybe they'll think we're working.
Man with Hat: Why do you want that?
Theoden: Because, it's Gandalf and Aragorn, if they see me they'll beg me to go to Minas Tirith and I don't want to.
Old Man: I think that old wizard guy just uncloaked.