B (House)
Rex (sovereign ruler of a state or people, king)
It (With reference to an abstract thing, or a matter expressed or implied in a statement) The prefix of the term Brexit is B (Beth) meaning house,
Rex meaning King.
As for 'it' one would first assumed that "With reference to an abstract thing, or a matter expressed or implied in a statement" is the meaning or 'representing the topic of a sentence, when the logical subject is a noun'. All is true, especial the logical subject being a noun.
The word Brexit refers to itself, but the King more-so, obscured is the definition of House withing the capital B.
However it more importantly refers to the person of it's own subject, that being Rex (King), so to describe a King as 'it' is the 'derogatory or humorous' sense of the the word.
What can one conclude from this gibberish?
The House of the King is Great Britain and it's people therein. The house's of Parliament have deliberately set out to destroy the Kings house. (Divide and concur) .
The usage of the pron., adj., and n.1 It within the term Brexit is a derogatory, and it's pointed at us.
EAOE