linchpin (this is a portrait of my mouth if I say so)

In response to Marcel Duchamp's 'Portrait of the artist's father' 1910.

See the artwork that inspired this poem in the flesh, along with more than 100 of Marcel Duchamp’s world-renowned pieces, in ‘The Essential Duchamp’ exhibition at the Art Gallery of New South Wales, 27 April – 11 August 2019.