some may have lost their maidenhood to a specific or non specified "blade"
You made me laugh.
JR Tolkien I believe used the term applicapilty to describe that his works are not an allegory, but you can find metaphors, if you search and want them to be. Human anatomy and the deed itself are so simple to describe that you can find applicable stuff everwhere and have no problems using any innundo you like.
Though using a title like The Blade and the Cups , would be intentional and not accidental ;-)