He cocked his head too, "Cook? Why would you have to..." then it donned on him, "OH! Oh you think... Peter didn't tell you? About...hmmm"
Finn sat for a moment contemplating, he didn't want to lie but he also didn't want to scare the boy either. "I think you should ask Peter about the treehouse and the rules and such okay?" Smiling as he said it.
Picking up his knitting things and standing, "I should go put these away. Don't forget what I said okay? You are our family Lemur, we love you!" With that he made his way out of the den to take care of a few things.