(image credit: Flickr user Armando Aguayo Rivera)
This brainteaser is reprinted with permission from Uncle John's Curiously Compelling Bathroom Reader, a fantastic book by the Bathroom Readers' Institute. The 19th book in this fan-favorite series contain such gems like The Greatest Plane that Never Was, Forgotten Robot Milestones, Ancient Beauty Secrets, and more.
Since 1988, the Bathroom Reader Institute had published a series of popular books containing irresistible bits of trivia and obscure yet fascinating facts. If you like Neatorama, you'll love the Bathroom Reader Institute's books - go ahead and check 'em out!