The Strange Case of Dr. Jekyll and Miss Osbourne (1981)

The odd French flick The Strange Case of Dr. Jekyll and Miss Osbourne (1981) follows Dr. Henry Jekyll (Udo Kier) and his fiancée Fanny Osbourne (Marina Pierro) as they celebrate their recent engagement by throwing a party. The couple’s exciting night is soon soured by the news of a child’s murdered body found outside their home. As their guests deal with that somber news, things get even worse when they discover the mutilated and assaulted body of a woman murdered by Edward Hyde (Gérard Zalcberg), Henry’s devious and violent alter ego. As Fanny and the partygoers begin to investigate the murders, she eventually closes in on discovering her future husband’s murderous secret. Of course, since this one's based on the famous Robert Louis Stevenson novel, you can probably guess the twist. But you might be surprised to find out that Fanny has a trick up her sleeve, too. She'll use some of that scientific stuff to turn into her own monster, and make sure she's got the power to get Mr. Hyde under control. Good luck controlling yourself when Udo Kier shows his butt and balls hopping into a bathtub full of the special elixir that's going to turn him into Mr. Hyde. No need to hide that ass, Udo! It's a good one. But if you've got a thing for the bad boys with the monster cocks, you'll prefer when Udo turns into Gérard Zalcberg. Gérard will have you hard when the muscular Mr. Hyde emerges from the bathtub looking all sorts of jacked! We'll see his tight buns, his washboard abs, and a little later he'll whip out his enormous, fully erect cock. It's a prosthetic, but it could still make us feel really nice. With that action from Mr. Hyde, The Strange Case of Dr. Jekyll and Miss Osbourne is like a gateway to monster porn!