Math Mind Trick by Hugh Moore on October 26, 2010 TweetEmailSharebar TweetEmailWatch and do. Mind blown. (via) Topics image, interesting, mind, puzzle, riddle Email Still need a laugh? Sign up for our office humor newsletter and you’ll receive a monthly email of the best posts from the site. Sign up today and you’ll also get a free download of 50 Quotations on Laughter (also available on Amazon).