Abstract: In the subtle fable that is L’Auteur et moi, the author interrupts his character to steal the starring role and tell his own story. This article makes an inventory of the forms of humour at work: shifting scales which inverse values of importance; the theory of the childish spirit of tongue-in-cheek humour miming naivety; logical nonsense and parodies of literary genres – everything is here to explain the pleasure of the reader and an author who refuses the efficiency of a post-toyotist society.