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
Fountain (Duchamp) porcelain, with a signature reproduced in black paint. Of all the artworks in this series of readymades, "Fountain" is perhaps the best known because the symbolic meaning of the toilet takes the conceptual challenge posed by the readymades to their most visceral extreme. Similarly, philosopher Stephen Hicks argued that Duchamp, who was quite familiar with the history of European art, was obviously making a provocative statement with "Fountain": Since the photograph taken by Stieglitz is the only image of the original sculpture, there are some interpretations of "Fountain" by looking not only at reproductions but this particular photograph. Tomkins notes