Tyrion: Your uncle's in the Night's Watch.
Jon: What cha doing back there?
Tyrion: Preparing for a night with your family. I've always wanted to see the Wall.
Jon: You're Tyrion Lannister. The Queen's brother.
Tyrion: My greatest accomplishment. And you, you're Ned Stark's bastard, aren't you? Did I offend you? Sorry. You are the bastard, no?