I think they are filled with a creamy nougat. I say that because I don't understand what nougat is either. Therefore, nougat is a reasonable metaphor for the unknown. Who would eat something where the package just said "Filled with, Unknown" ? Yet, once even the unknown has a yummy sounding name it is appetizing. I propose therefore, until this business is settled, that we use the name 'nougat' rather than "singularity," "Nariai," or "de Sitter space" which I find particularly unappealing (may as well use "latrine space" IMHO). Obviously, using "nougat" creates the obvious complication that precludes the use of 'worm hole' or 'worm' anything for that matter in close proximity to nougat. The replacement of the term 'worm hole' with something more palatable, I leave to greater minds.