The result of a person (or organisation) disappearing so far up their own backside that they warp a hole in spacetime from which not even logic can escape.
Friend: hey bro u know where i can score some lean for the rager tonite?
Friend 2: yeah bruv the plug got in this new Broncleer shit from south Africa it be hitting different!
Italian: this girl refused to go out with me because I'm black
Anglo-Saxon: you are a browncel, friend
Italian: Pax Romana has fallen...
Anglo-Saxon: Pax Romana has fallen... And Aurelius was a brown cuckold