Watch on Soap2day. Comedian and actor Frank "The Big Guy" Payne lends his body to science to show viewers what's going on inside his obese body. Doctor and scientists use the latest medical advances to reveal the shocking truth of what more than 100 pounds of excess fat does to the body's heart, liver, bones, and joints. This film is the story of a man determined to fix his habits and his ill health. RIP, Frank!