Humphries' other satirical characters include the "priapic and inebriated cultural attaché" Sir Les Patterson, who has "continued to bring worldwide discredit upon Australian arts and culture, while contributing as much to the Australian vernacular as he has borrowed from it", gentle, grandfatherly "returned gentleman" Sandy Stone, iconoclastic 1960s underground film-maker Martin Agrippa, Paddington socialist academic Neil Singleton, sleazy trade union official Lance Boyle, high-pressure art salesman Morrie O'Connor, and failed tycoon Owen Steele.
the son of Eric Humphries, a construction manager, and his wife Louisa.
Then, to the horror of passengers and crew, he would proceed to eat the contents.
One April Fools' Day Humphries placed a roast dinner and glass of champagne in an inner-city rubbish bin.
An even more extreme example was his notorious "sick bag" prank.
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.
"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.