You used to walk into a newsagent and see the regular papers and magazines, and then the rack of playboy and porn just sitting off to the side, often not that far from the kids magazines and comics.
Japanese convenience stores still work this way. I’m still a bit bemused every time I see scantily clad ladies right next to the shounen manga, but maybe it shouldn’t xD
Dunno if this has changed, but it used to be this way in the US at basically any gas station in a ruralish area by a highway (in other words - stops with truckers), and you'd just have row after row of porn mags. The only 'censorship' is that they tended to be in racks that covered up about 3/5th of their height, so you could see the title and a bit more, but generally anything explicit would be in the lower 3/5th that you could only see if you picked it up.
