We've had this conversation before, most famously regarding Jive (see the movie Airplane ) which had regional variations (e.g. Brooklyn vs. New Orleans) that were incomprehensible to each other.
And there are ongoing regional comprehension problems with general regional and ethnic dialects, hence the whole ebonics controversy of the 1990s.
I still can't believe the two facts floating here.. that someone with the ability to tolerate this brain rot and that there's actually people with this level of brain rot.