Superstition (1985) on Netflix

A pair of young people are making out in a car in a dark area next to a large empty house. The girl says she's nervous making out there because the house has an evil reputation, but the boy convinces her there's nothing to worry about. Something resembling a corpse thuds against their car and they speed off, but the scare was a joke perpetrated by two young men who are lurking in the area. One is inside the house and the other is by the road, and they call out to one another, laughing about their joke. Then something inside the house manifests itself to the boy inside; doors start closing, and a dark presence stalks him until he's hurled against the ceiling, killing him. His friend comes inside to find him and is also stalked by the presence. He tries to escape through a window, but the window slams shut on him and holds him still while something appears behind him and slashes his lower body until his body is completely cut in half. His upper body falls outside the window while his legs fall inside the house.