Definitions by Hop Sing
manbitch
Simply put, a man bitch is a friend that takes care of multiple chores and duties that you do not want to do. They also do it with great pride and without complaining. Often times they take the initiative, and consider it a great honor.
ie. pay the bar tab, give rides to airport, take care of the pets while you are away, pick up dry cleaning....Most MB's are talented at one thing or another, otherwise why have them around?....If you don't have a man bitch, you probably are one.