Jibby Jones by Ellis Parker Butler

Well, it took us quite a while to learn that Jibby Jones was not as stupid as he looks, and that when he looks stupidest and says the queerest things is when he is farthest from being stupid. That is when that old brain of his is working hardest. It took us a couple of weeks to learn that, and to get to liking Jibby the way we did, and I don't know that Wampus ever did think, in the bottom of his heart, that Jibby was anything but stupid and lucky.

And at first we did try to "string" old Jibby good and plenty. We told him things about our river that would not have fooled a mudcat or a carp. And when we told those things to Jibby, he would look at us through his spectacles in that serious way of his, and sometimes we were sure he believed the nonsense, and sometimes we were not so sure.