Under the pressures of binary identity politics the search for Aboriginal identity among people of mixed descent has become a Russian roulette that may end up with a public hanging where those with a larger public profile draw a bigger crowd. This essay explores the historical dimensions that underpin confusion and uncertainty: changing definitions of Aboriginality and the external, often discretionary, imposition of identity. Historical case studies illustrate that a certain slippage was always part and parcel of the quest to define who is, and who is not, considered as Aboriginal.