Meet the World’s Funniest First Grader—Junie B. Jones! One of Junie B.’s top front teeth is loose! Only Junie B. is not that thrilled about this development. Because what if she looks like toothless Uncle Lou? And even worse . . . what’s all this tooth fairy business? Like, who is this woman, really? And what does she do with all those used teeth? So many questions, so little time.