What a monument was supposed to be
Agiant soft hamburger only mattered because of the thing it mocked. For most of Western history a monument was a fixed set of qualities. It was hard, bronze or marble or carved stone. It was vertical and heroic, a figure standing tall, usually raised on a pedestal so the viewer had to look up. It was built to last, to hold its exact pose for centuries, and built to ennoble, to honor a great man, a god, a battle, a myth. Sculpture, by long habit, stood up straight and asked to be admired. And the first wave of Pop Art around Oldenburg, the painters Andy Warhol and Roy Lichtenstein, had stayed flat on the wall, taking the consumer image but keeping it as a picture.
The monument becomes a hamburger, and sags
Oldenburg flips three things at once, and they are worth taking one at a time. First, the subject: the thing given the scale and seriousness of important sculpture is a fast-food hamburger, the least heroic, most disposable object in the modern world. The everyday consumer commodity becomes the monument. Second, and stranger, the medium contradicts the genre: by making the colossal burger soft, Oldenburg makes it anti-monumental. It cannot stand on a pedestal or strike a heroic pose. It cannot hold its shape unchanged; it droops on the floor and keeps drooping. A monument is meant to defy time and gravity; this one openly surrenders to both. The softness is not a quirk of materials; it is an argument, made in foam and canvas, against everything a monument claims to be.
Third, the humor is the content, not a decoration on top of a serious idea. The absurd scale and the comic slump are not garnish; they are the whole statement. The piece is funny on purpose, and its funniness is the meaning: the seriousness of a museum and the scale of a war memorial, lavished on a sagging hamburger with a pickle on top. Where an Abstract Expressionist canvas was anguished and inward and Warhol’s cans were deadpan and cool, Oldenburg’s burger is openly, physically comic, and it asks to be taken seriously precisely because it refuses to be solemn.
The door it opened
Once a sculpture could be soft, funny, and made of low, everyday stuff, a whole new register opened up. Oldenburg himself walked straight through it, into a long line of soft objects (a drooping Soft Toilet, slumping typewriters, sagging drainpipes and light switches) that took the same move and pointed it at the hard machinery of modern life. And from the floor pieces grew the giant public Pop monuments he later co-created with Coosje van Bruggen, colossal clothespins and shuttlecocks and trowels planted in city plazas, the everyday object as a deflatable, deadpan public statue. The slumping hamburger is the hinge: the moment the monument stopped having to stand up straight.