PERKING do submissive. Anglicism derived from Perkins, the butler's surname that appears in some crime novels. It became very popular for its interpretation by the Argentine cult humorist Alberto Olmedo (1933-1988) who, to the voice of "Perkins", immediately appeared the submissive butler. From there he became part of the lunfardo and is called that to the cuma in prison who is the submissive of the rest of the prison population, and makes a child of the errands. It is today, in popular parlity, the one that has the least authority, or has none.
