The "Prove it's you!" test Griffin gives Shade, and Shade's increasing frustration at his son's (fairly justified given the circumstances, but still) paranoia. ("Would you stop talking about me like I'm not here?")
Griffin: In the human city, Shade got chased by pigeons. How many pigeons were there?
Shade: It was... um, six, I think.
Griffin: I heard it was nine!
Shade: Well, it was a while ago, but I'm pretty sure it was just six.
Griffin: All the other newborns said it was nine.
Shade: I was there!
Griffin: Were you? I wonder.