Speed-slicing watermelons is not an activity for the faint of heart. In fact, most of us enjoy our watermelons as a lazy summer day snack, best enjoyed while perhaps reclining poolside. But for daredevil fruit destroyer Ashrita Furman, there’s no better way to spend a day than slicing watermelons as fast as possible — on his own stomach — in search of the glory of a new Guinness Book of World Records title.