 " Oh god , what have I done ? What have I created ? Is that me , or is this me , this small person standing down here on the stage ? That 's why I call the tour ' Who 's That Girl ? ' ; because I play a lot of characters , and every time I do a video or a song , people go , ' Oh , that 's what she 's like . ' And I 'm not like any of them . I 'm all of them . I 'm none of them . You know what I mean . ? " 
