Girl Friday ~n Origin: 1940 - A 'go to' girl; a female who will help you get things taken care of; a female you can rely on when you are in need of extra assistance; a female who acts as a 'jack of all trades' and is capable of doing almost anything; a girl you can count on when you are overwhelmed with your own chores and the duties must be done; a girl who does most of the leg work on a project, but never takes credit.