One of my all time favorites: "We're going to need a used chicken."
Man I have to know what this is in reference to.
A few from my table:
1) Halfling rogue looking into a grave at the bottom of which is the entrance to an underground cavern. "I'm three feet tall. How am I supposed to get down into that hole?" To which the dwarven barbarian responds with "Like this." -Kick-
2) Human monk to Wood Elf druid/barbarian who already has a wolverine companion and just found himself a badger. His plan with the badger was to carry it on his shoulder so it could leap at the face of his opponents. The elf had mentioned to the party that other elves tended to fear and hate him which is why he spent much of his time alone before joining the group.
human: Wen, are you planning on carrying that badger around all the time?
elf: Yes.
human: I think I may know why people don't like being around you.
3) NPC hermit referring to a tribe of rangers and druids called Da'Nari.
hermit: Why yes I do know the Da'Nari. I been to their camp a few times. Nice people though hardly the most cosmopolitan group your likely to find.
pc fighter: Mmhmm, I see. -muttering to himself- Dude, you're a f***ing hermit!
4) Once was actually present for a move that apparently has happened to quite a few groups:
apparition in dungeon: I will answer any one question asked of me.
player, before anyone could stop him: Is that one question from each of us or one question in total?
apparition: One question in total. -Poof- vanishes in puff of smoke
there are more but I can't remember them exactly