Without preparation. First used in correlation with withdrawl from an addictive substance in the 1920s with regards to heroin addiction. The idea being that "cold turkey" is a food that requires little to no preparation to eat - hence doing something "cold turkey" means the action will be done without preparation & immediately. Also connected to the notion that the symptoms of withdrawl from many substances include cold sweats (moisture), and sallow skin - much like that of a cold, dead, turkey.
He gave up his vice the old fashioned way....by going cold turkey.
A male whore. Usually identifiable by the extremely large list of sexual partners they have had or attempted to have & the fact that they will flirt with almost anything that moves. Often times they are forced to find new places to obtain said sex since they have literally used up their current pool of opportunity. Many times others who know them will make little "eee -eee" bat noises as they pass by.