I have a friend who's only a little younger than me (I'm 65.) He told me about a really horny girlfriend he had when he was young. Apparently, they both incorporated a lots of fantasy and roleplaying in their sex life. One time, they pretended that it was his job to get her pregnant, supposedly against her will (kind of a rape fantasy.) After about a week of that, they decided that she was pregnant and they switched gears. Now, it was his job to fuck her at least twice a day, to "feed the baby"! (Apparently, in their fantasy, unborn children are healthiest when they receive multiple servings of nutritious cum every day as their primary source of food!) I've never been disappointed with any of the women I've fucked, but I've always wished that at least one of them would have been enthusiastic enough about it to enjoy a little bit of kink.