Gentlemen, this is the perfect foreplay: no sex at all, just slapping, beating, hurting, pissing, spitting and maltreating your girls for 1 hour to your sole unrestrained enjoyment. You'll fuck like gods after that.
"Oh, fuck, Dad, that hurts. You've never gotten that far inside me before." "That's just your hymen tearing, son, that means your cervix is open. I guess you're finally ovulating".