The term "booby" always throws us off because it reminds us of the seabird, but we suppose it makes sense when you really think about it. These women have large breasts, and they are therefore booby. Rachmaninoff had large hands, and he was therefore handy. It sounds strange, but you'll get used to it after you browse these pics.
See? Giant boobs everywhere--or generally nice boobs of a reasonable size--and not a bird in sight. Don't you feel better? We do, too. Now all we have to worry about is being visited by a buxom Rachmaninoff in our dreams. He probably couldn't play piano if he had Rosie Jones's tits sticking out of his chest.