Hardest riddle I've heard, PROBABLY, is the following: Which 5 letter English word is pronounced exactly the same every time you take away 1 letter from the end, until there is nothing left. My brother told me that one, after 1 week of thinking i gave up... But i know it now You?
The hardest riddle I have ever heard is- What does everyone need, but no one uses, oh and everyone gives it. Ok so prolly not the hardest riddle ever, but it's the only I could think of right now.
Bradders - Lol. davejug1 has the right answer. I really couldn't figure that one out myself ermmmmmm.....