Ah, the notorious 101 Annual King William's College Quiz.
For over a century students at the College on the Isle of Man have pulled their hair out over this wickedly tough general knowledge test (a new one every year, of course).Known far and wide as the hardest quiz in the world, the average score = 2.
What kind of mind(s) create this thing? Ouch! It's totally Brit-centric, but even those of us far removed from Albion can enjoy the intricacy of the thing.
So have a go at the quiz, Mr. and Ms. Smarty-Pants. Quiz and answers linked above. See if you can beat "2."