Although his expression doesn't really change, Tyrion misses a beat before he manages to respond.

"Oh, I see." Really, is that any weirder than having, say, a three-headed dragon for a family crest? Actually it is, in his opinion, but he's trying to adjust his worldview now that he's in Baedal. "I'm Tyrion. How about you pick whatever entry you'd like to read, and we'll... work through it?"