creating an utter mess, fuck up totally, total chaos

How to fuck up an entire country ; To commit Brexit

When somebody makes a decision despite being uninformed of said decision and its consequences

The act of doing something without knowing the consequences, but realizing too late that you could have fixed it.

A joke.

Brexit, verb brexiting, is a term used to describe a person who is telling everyone they are leaving, but then stay another hour.

When, in mid-conversation, many English people just inexplicably decide to wander off, while any normal person would at least offer a 'BRB' of some kind. They tend to be gone for a long time, possibly even all day long, and when they get back act like they never left.