Puzzles are fun, and every now and again you need a quick little brain-teaser to distract yourself from the day. Here's that very puzzle. Of the five shapes below, can you tell which one is the odd one out and why? We'll give you a little time. Scroll down for the answer, below: The answer is... The reason why is fairly simple: All but one of the shapes is a square. All but one of the shapes is re