The neighbor porn video category is very easy to describe. It's the kind of porn that is about two or more neighbors fucking. They can be real or pretend. If you like a plot, it can be that they are horny for each other. Maybe one gets horny because he's watching his hot neighbor across the street, so he goes over and starts making out with her. There is plenty of cheating involved in these movies because people really seem to love the fantasy of fucking their neighbors. The action keeps on getting hotter and hotter.
If you don't like a plot, then they can start with the main characters already fucking. Maybe it's a party and the whole neighborhood shows up and joins in. Then a big orgy starts. There will also be creepy voyeur-style movies with people peeping through the windows, or even walking in on someone having sex. Some neighbors are fucking nosy.
In the end, this category is kind of all about the thrill of being caught in the act. People really seem to love this fantasy, and they are willing to pay attention when it comes to life on the screen. The neighbor porn movie has become an iconic adult film category!