Meaning nonsense, lack of knowledge, and annoyance to someone. Generally used to degrade someone who's incompetent, provides no value and furthermore gives more trouble than it's worth.
Max: Emily, have you heard that the earth is flat and that vaccines are the government's ways of turning us into lizards?
Emily: You're a real shibberwabber you know that right?
1. Adjective A word used to describe something generally disappointing, dissatisfying or worthy of disapproval. Depending on the context, it can relate to something/someone being; cringe, stupid, annoying, predictable, weird etc.
2. Noun A (usually) young person who displays a palpable amount of naïveté, cringeness and overall brainrotted behaviour.
Definition 1)
Person 1: "That exam was proper skibbers"
Person 2: "Dun no, that was piss"
Definiton 2)
Person 1: "Bro I can't deal with these skibbers on the train. All they talk about is tung tung tung tung tung tung tung tung tung sahur."
Person 2:"Yeah, those little skibbers-- what are they like!"