After talking about a few of the pieces in the room, on a lark I walked over to the corner and began to describe the humidigraph as a lat 20th century version of Dada-esque art, how it represented the constant measuring and graphing of people in contemporary society and how one loses one's basic humanity in the process. I would have gotten away with it too, if the museum guard behind the group hadn't started laughing his head off at the explanation.
This piece is in the Philly Art Museum
Marcel Duchamp - “L.H.O.O.Q.”, 1919. Dada Art -
https://s-media-cache-ak0.pinimg.com/236x/64/0f/9a/640f9abf0d0b64769cbb24337bf04ec8.jpg