The song is a role reversal performed in the voice of a child-victim of an ephebophile / sexual predator. Dillon imagines the victim showing the abuser what it's like to be in the victim's shoes: “you’d be thirteen, I’d be thirty-five.” The roles are clearly reversed there, but the voice is still that of the abused child.
In the imaginary, switched role of the abuser, she clearly depicts the flippant, unthinking and selfish demeanor so typically characteristic of such abusers.