All set up ready to go... originally used regarding computer software - locked and loaded, just needs the turnkey to operate....
In other words - another friggin' meaningless buzz word seconded to every two bit copywriter in need of a sales point when they don't know what their software, company or boss actually does
A person who is just automatically a jerk. Simply turn the key, and you get a jerk. No muss. No fuss. The kind of person you can easily find at George Costanza's "Jerk Store". If the Jerk Store calls, they are probably looking for you - the Turnkey Jerk.
Person 1: "I think Cathy is a real Turnkey Jerk..."
Person 2: "Yea, maybe, but that dude Ryan is even more of a Turnkey Jerk-Face"