Freakin' stylish word, used by young slovenian blog-writer Aleksandra Kvrzdić, who is famous for having less romances that "can be count on fingers of 4 feet".
The word itself has no special meaning, it can be used whenever you want. Almost whenever. It just makes you stylish. Yeah.
OMBIA.
Omnicatastroclusterfuck (Noun): a catastrophically and incompetently handled situation where every negative outcome was predicted but utterly ignored by those in charge: see Brexit
With just 9 days left to go until Britain leaves the EU no one on either side has any idea what the plan is. What an Omnicatastroclusterfuck