The lead gay man gives him perhaps a cup of tea or coffee, some biscuits, and maybe he accidentally splashes water on his pants and because our lead gay is very sorry for the unwelcoming gesture, he starts wiping his crotch area with a piece of cloth. He starts feeling attracted to his neighbor until such gay rings his doorbell one day and as he invites him inside, something beyond casual neighbor bonding happens.
A common scenario is that the lead gay protagonist encounters his hot neighbor, whom he may catch masturbating or taking a shower or anything basically that can give him the wildest hard on. As in the Bible says, love thy neighbor-this porn takes this quite literally and quite sexually. It refers to the kind of porn wherein a gay man is living to another hot gay man next door. Neighbor porn is popular even among straight people who watch gay porn.
