Fair enough! But I'd question whether, even with women who do take on that persona, the vagina is a body part that can helpfully symbolise that role? I'd still think it'd be something like the breasts, or even the mouth (especially since there's so much feminine autonomy assocaited with make-up and lips and so on). But that said, aside from actually, you know, sleepign with a woman (sleeping far more often than 'sleeping', but that too), my knowledge of lesbian social circles / culture is pretty much 0.