My Boo’s All That Posted in M Best definition My Boo’s All That Slang: By boyfriend/girlfriend is really nice. Yo G! My Boo’s all that. My Boo’s All That: define #2 My Boo’s All That Black slang for my girl or boyfriend is all that. Girl,my boo is all that. How satisfied are you with the definition? Looking for My Boo’s All That meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 24 times.