Check out this astonishing leap of faith:

The Muggle Prime Minister of Britain

This fictional character, equivalent to the real Prime Minister of Britain, receives a visit from Cornelius Fudge and Rufus Scrimgeour in the opening chapter of Harry Potter and the Half-Blood Prince.

The Prime Minister of Britain in the book is supposed to be like... the Prime Minister of Britain? And here I was sure that the Muggle Prime Minister of Britain was standing in for Gabe Kaplan.

It's enough to make you post Sectumsempra on your own talk page.