We questioned the definition of 'portrait', using the 'Exquisite Corpse' as a research method. Many thanks to the 27 participants!
Surrealist artists from the 1920s played a collaborative, chance-based parlor game, typically involving four players, called Cadavre Exquis (Exquisite Corpse). Each participant would draw an image (or, on some occasions, paste an image down) on a sheet of paper, fold the paper to conceal their contribution, and pass it on to the next player for his contribution.