"L.H.O.O.Q., a cheap postcard-sized reproduction of the Mona Lisa,upon which Duchamp drew a mustache and a goatee. The "readymade" done in 1919, is one of the most well known act of degrading a famous work of art. The title when pronounced in French, puns the frase 'Elle a chaud au cul', translating colloquially in 'She has a hot ass'." Here.


"Made by Duchamp while on a homeward bound train to Rouen in the half-darkness of dusk, this Readymade is essentially a cheap reproduction of a winter landscape with two drops of color added to it. Inscribed in the lower right corner with the words, "Pharmacie. Marcel Duchamp/ 1914," Pharmacy illustrates the imposition of authorship upon a piece by merely signing it." At toutfait.com.