The librarian is working away when a chicken enters the library and walks up to her desk. The chicken clucks, 'Book, book, book, BOOK!'
The librarian sets a pile of four books in front of the chicken. The chicken grabs them and disappears out the front door.
About an hour later, the librarian sees the same chicken come into the library. It sets the four books down on the desk and again squawks, 'Book, book, book, BOOK!'
The librarian wonders what the chicken is doing with these books, but since they seem to be in fine shape, she takes the returns and gives the chicken 4 more books. The chicken zips out the door and down the road.
Another hour passes and the librarian hears a loud 'Book, book, book, BOOK!' She looks up from her work and sees the chicken back yet again! By now, the librarian's curiosity has gotten the better of her. She gives the chicken four more books and it heads for the door. This time, as soon as the chicken is gone, the librarian jumps up and runs to the door. She follows the chicken down the road for a half mile to an old farm. The chicken ducks through the fence and disappears into a cluster of trees.
The librarian hops the fence, and sneaks up to the trees. As she moves some branches aside, she sees the chicken standing by a pond handing each book to a frog. As the frog looks at the cover of each book, he says, 'Read It. Read It. Read It. ...'