In one of my essays at uni I tried to write a rant that was opposite to intercourse to prove the point. Can't remember it her but it is something like this.
To dig, to bury to place in a state for decomposition, to dig, to dirty, to mess up, to contaminate and to infiltrate. Words meant for description deny the man a voice, allo him only to be the corrupter, the one who takes away purity and gives ruin instead, the defiler the unclean and the undeserving. To be a man is to be impure with every act, to be contemtible and to be hated. To masturbate is to self-hate and weakness, the wanker, the loser and the pointless, yet to see sexual fulfillment is to simultaneously destroy the object of your love. To persecute her beyond worth, and to dirty her beyond acceptance. Such is the fate of the man. His sex is base, contemptible and risible ridiculed in life and in death. satan and his hoards punish the men for his sexuality by heaping more sexuality upon him and turning him into a beast.
etc etc etc
I don't think dworkin did anything useful for women by going on about this stuff in such a deranged way - I didn't ever hold a mirror to 'my slit' and wonder about how something big would go in - i never had any idea how big a boys/man's penis was when I did that. I was amazed at how cool it was that I could have someone inside me, when men can't (though they can, actually onviously) and that intimacy and danger of it being embarrassing thrilled me. I never saw it as oppressive and controlling that it be the case.