Mind Job (MJ) Posted in M Best definition Mind Job (MJ)work When some one or some thing does or says something crazy that blows your mind. Kevin and Jason jumped into some bushes off of a two story building and it gave me a total mind job (MJ). How satisfied are you with the definition? Looking for Mind Job (MJ) meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 65 times.