Britanniaboo
A person who adores the British Empire, and can't stop blabbing and talking about the British Empire. Every few minutes a British Empire fact comes out of the "Britanniaboo's" mouth. Britanniaboos are usually 14 year old Americans who learnt too much about what a British Empire is and criticizing you on hating the British Empire
Britanniaboo: "Did you know that King Henry the IAVSXXIAXVAXXINATED had an erection in the middle of London?!"
Person: "Shut the hell up no one cares."
Person: "Shut the hell up no one cares."