Shibberwabber
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?
Emily: You're a real shibberwabber you know that right?