The term 'stone' is a measure of weight still commonly used in the U.K., one stone is equal to 14 pounds. So, if I told you that I weigh 13 stone, 13 lbs, that means in the U.S. I weigh roughly 195 lbs. When I saw Harry mention being 18 stones, I was confused . . . I didn't think they used those units in the Bahamas. Well, now I know.