Agriculture officials in Louisiana presented a couple with a Guinness World Records certificate after their 7-pound, 14.64-ounce grapefruit was confirmed as the heaviest and largest in the world. The Louisiana Department of Agriculture and Forestry presented Mary Beth and Doug Meyer of Slidell with the certificate Sunday. Their grapefruit, which measures 28.75 inches in circumference, was confirmed as larger than the previous record holder, a grapefruit weighing 7 pounds, 1 ...