"The Legend of Knockgrafton" is an Irish folk tale/fairy tale published by T. Crofton Croker in Fairy Legends and Traditions of the South of Ireland (1825). A humpbacked man named Lusmore delights the fairies by revising their fairy song and has his hump removed, while another hunchback Jack Madden angers them and receives a second hump on top of his own. To the fairies' initial chanting of "Monday, Tuesday", Lusmore had added "Wednesday", but Jack improvised with extra days which the fairies disliked.