"Sue!" her father choked out. "Aren't you a tad old to be sitting on my lap?" She felt him squirming under her. She knew his cock was being bent in an uncomfortable angle under her ass. "No buts, Dad. I know you want me."
A disease suddenly descends on humanity. Women develop a serious illness which can only be cured by sexual intercourse, and it has to be with the right guy. No condoms, no pulling out, and he has to really want it. Bad luck? A sign from a God with most mysterious ways? Or could it possibly have been designed by a human with an agenda?
A scumbag soldier finds an "opportunity" naked and drugged on a bed in a mysterious complex. He should have left her alone... (This one is nastier even than my usual horror. You have been warned.)