Humphries spent two years studying at the University of Melbourne, where he studied Law, Philosophy and Fine Arts. During this time he became Australia's leading exponent of the deconstructive and absurdist art movement, Dada. The Dadaist pranks and performances he mounted in Melbourne were experiments in anarchy and visual satire which have become part of Australian folklore. An exhibit entitled "Pus in Boots" consisted of a pair of Wellington boots filled with custard; a mock pesticide product called "Platytox" claimed on its box to be effective against the platypus, a beloved and protected species in Australia. He was part of a group that made a series of Dada-influenced recordings in Melbourne from 1952–53. "Wubbo Music" (Humphries has said that "wubbo" is a pseudo-Aboriginal word meaning "nothing") is thought to be one of the earliest recordings of experimental music in Australia. Other exhibits include "Creche Bang", a pram covered in meat and "Eye and Spoon Race", a spoon with a sheep's eye.