Flesh for Frankenstein (1973)

Starts with this bald, jacked dude and a slim blonde chick in some old stone dungeon. She’s kneeling in front of him, mouth open, looking up like she’s ready to suck him off. The lighting’s dim, but you can see his cock is already hard and thick—definitely more than average. Later, they switch it up, and he’s got her tied up with rope, bending her over a wooden table. The way he pulls her hair while fucking her from behind is rough, no holding back. The whole vibe is dark and intense, like a horror flick but with way more nudity. Camera work’s solid, gets right in there for close-ups when she’s gagging on his cock.