In case no one has mentioned it (I'm not trawling through 38 pages to see if someone did), the line "useless as nipples on a breastplate" was pretty glaringly obvious. I believe that was a Tyrion line. Sure sounds like a Tyrion line.
What about when Bran and his group cross that lake on the winding secret pathway to the tower in SoS? I thought that seemed a bit twee for GRRM's universe. Surely that is an allusion to something.