— I'll give you an extra two points if you can tell me the longest fence in the world. — The Great Fence of China! — It's to keep people off the Great Wall. About ten feet away from it. QI / Quite Interesting Alan Davis Phill Jupitus Stephen Fry Season 1 Episode 12 23.12.2003 Funny Quotes Quote added by hellthug 04/13/13 at 6:44am