Juan Ruiz is the closest Spain got to an author of the stature and scope of Chaucer, and his book is now a canonical text, which is widely taught in universities in departments of Hispanic Studies in the US, UK, France, as well as Spain and Latin American. This book has no market competitors; that is, there are no major studies of the Libro in print, and there are no systematic studies of humour, the visual or the body. This book will be of wide interest to those working on or who are students of medieval Hispanic literature, and of broader interest to those working on or studying humour, the body or medieval poetic narrative.This book is an innovative study of humour and the body in Juan Ruiz's "Libro de Buen Amor" (1330), using modern analytical techniques to examine the place of the Libro's bawdy and grotesque in relation to secular and sacred culture.