A quotation of Jacques Lacan, intellectual
Thus the erectile organ comes to symbolize the place of jouissance [ecstasy], not in itself, or even in the form of an image, but as a part lacking in the desired image: that is why it is equivalent to the
of the signification produced above, of the jouissance that it restores by the coefficient of its statement to the function of lack of signifier (-1).
— Jacques Lacan (via Alan Sokal)
I’m sure that totally made sense in context.