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 this was written in 1961 by fellow Dadaist Hans Richter, in the second person, i.e. "You threw the bottle-rack...". Although a marginal note in the letter suggests that Duchamp generally approved of the statement, Richter did not make the distinction clear until many years later. Duchamp's attitude was more favorable, however, as evidenced by another statement made in 1964: The Prix Marcel Duchamp (Marcel Duchamp Prize), established in 2000, is an annual award given to a young artist by the Centre Georges Pompidou. In 2004, as a testimony to the legacy of Duchamp's work to the art world, a panel