>>654533
It is just a concept of what happens to soul after death based on some of the teachings of the Church fathers, some say it's not exactly correct and that's what the controvercy is all about.
Now, on the meme sphere, some dudes from other denominations tired of the shit constantly thrown to them about the countless heresies that their churches spread worked overtime to find in Orthodoxy something that would look slightly heretical in their eyes and stumble upon it and now they spam it non stop.
The important thing to remember is that it is still a theory and that the Orthodox church will never ask for money to pass you from the toll houses.