What does Boy Friday mean?

Boy Friday meaning in Urban Dictionary

A 'go to' boy; a person who can help you to get things cared for; a guy you can easily rely on if you are needing extra assistance; a man just who will act as a 'jack of all of the positions' and it is effective at performing most situations; a guy you'll count on while you are overrun with your own chores together with duties needs to be done; a person who does most of the leg work with a project, but never takes (or gets) credit.