L.H.O.O.Q. and wrote "Moustache par Picabia / barbiche par Marcel Duchamp / avril 1942". As was the case with a number of his readymades, Duchamp made multiple versions of "L.H.O.O.Q." of differing sizes and in different media throughout his career, one of which, an unmodified black and white reproduction of the "Mona Lisa" mounted on card, is called "L.H.O.O.Q. Shaved". The masculinized female introduces the theme of gender reversal, which was popular with Duchamp, who adopted his own female pseudonym, Rrose Sélavy, pronounced "Eros, c'est la vie" ("Eros, that's life"). Primary responses to "L.H.O.O.Q." interpreted its meaning as being an attack
Marcel Duchamp puns, and spoonerisms by the French surrealist poet Robert Desnos. Desnos tried to portray Rrose Sélavy as a long-lost aristocrat and rightful queen of France. Aphorism 13 paid homage to Marcel Duchamp: "Rrose Sélavy connaît bien le marchand du sel" ‒ in English: "Rrose Sélavy knows the merchant of salt well"; in French the final words sound like Mar-champ Du-cel. Note that the 'salt seller' aphorism – "mar-chand-du-sel" – is a phonetic rearrangement of the syllables in the artist's name: "mar-cel-du-champ." (Duchamp's compiled notes are entitled, 'Salt Seller'.) In 1939 a collection of these aphorisms was published under the name