Wouldn't it be funny if, as an organised joke, they'd all agree to bring back only (lots of) furry porn to see how that would shape the nation through generations to come?
Well, it's not like they have free will. All their knowledge of outside world and within country is filtered through their government, bringing back furry porn means nothing if they cannot share it. It'll be confiscated immediately on arrival.
You act as if they have any chance of getting back into North Korea. Even if they survive combat there is no chance they would every be let back inside after having seen the outside world
There is a whole genre of pornography that is centered around a woman of questionable intelligence getting stuck in a washing machine/couch cushion/stair bannister/etc and then getting fucked by stepson/brother/cousin/father/random repairmam either to get them free or because they are unable to stop them.
It very much seems like a quasi acceptable rape fantasy that isn't totally rape even though obviously it would be Rape.
I know. The joke is, Russian soldiers have stolen washing machines from homes in occupied territory, indicating a domestic shortage, and presumably, some North Koreans would not even know about them.