If you’re not afraid of getting down and dirty, you’re not paying attention. Warning: SPOILERS for many movies ahead!
Rosemary's Baby (1968)
Directed by: Roman Polanski
Written by: Roman Polanski
What it's about: Pregnant Rosemary Woodhouse (Mia Farrow) becomes convinced that there's something wrong with whatever's growing inside her, and it's all part of a conspiracy that includes her husband Guy (John Cassavetes).
What it'll make you afraid of: Being betrayed by your partner into carrying the demonic spawn of Satan. Also, post-sex scratch marks will now have you questioning whether you actually did the deed with the devil.
Paramount Pictures
The Last House on the Left (1972)
Directed by: Wes Craven
Written by: Wes Craven
What it's about: Mari Collingwood (Sandra Cassel) is raped and murdered by escaped convicts. When the perpetrators show up at the door of Mari's parents, Mr. and Mrs. Collingwood (Gaylord St. James and Cynthia Carr), seek revenge.
What it'll make you afraid of: A blow job with teeth. To be fair, Weasel (Fred Lincoln) totally deserved it, but you'll definitely think twice about where you put your penis — not that you shouldn't already!
MGM
Don't Look Now (1973)
Directed by: Nicolas Roeg
Written by: Allan Scott and Chris Bryant
What it's about: After the drowning death of their daughter Christine, John (Donald Sutherland) and Laura Baxter (Julie Christie) take a trip to Venice, where they meet a blind psychic (Hilary Mason) who claims she can see Christine.
What it'll make you afraid of: The inextricable link between sex and death. You might think you and your wife are finally moving past the death of your daughter, but you'll later flash back to that passionate fuck-fest when you're bleeding out.
Paramount Pictures
Flesh for Frankenstein (1973)
Directed by: Paul Morrissey
Written by: Paul Morrissey
What it's about: Baron von Frankenstein (Udo Kier) is obsessed with creating a master race to serve him, and he hopes the head of a lustful stableboy (Joe Dallesandro) will speed up the breeding process.
What it'll make you afraid of: Being used — do you genuinely want to get down with that person, or are you being manipulated by a mad scientist? Also, rough sex can result in disembowelment, apparently.
Image Entertainment