L.H.O.O.Q. a late interview (Schwarz 203), Duchamp gives a loose translation of "L.H.O.O.Q." as "there is fire down below". Francis Picabia, in an attempt to publish "L.H.O.O.Q." in his magazine 391 could not wait for the work to be sent from New York City, so with the permission of Duchamp, drew the moustache on Mona Lisa himself (forgetting the goatee). Picabia wrote underneath "Tableau Dada par Marcel Duchamp". Duchamp noticed the missing goatee. Two decades later, Duchamp corrected the omission on Picabia's replica, found by Jean Arp at a bookstore. Duchamp drew the goatee in black ink with a fountain pen,
Marcel Duchamp Académie Julian from 1904 to 1905, but preferred playing billiards to attending classes. During this time Duchamp drew and sold cartoons which reflected his ribald humor. Many of the drawings use verbal puns (sometimes spanning multiple languages), visual puns, or both. Such play with words and symbols engaged his imagination for the rest of his life. In 1905, he began his compulsory military service with the 39th Infantry Regiment, working for a printer in Rouen. There he learned typography and printing processes—skills he would use in his later work. Due to his eldest brother Jacques' membership in the prestigious Académie