Place popped popcorn into a very large bowl, removing any unpopped kernels. In a medium microwave-safe bowl, combine sweetened condensed milk, brown sugar, crumbled candy bar and pudding mix; stir. Microwave on high 1-1/2 minutes or until boiling; stir. Cook on high 30 seconds, stir (mixture should be thickened). Pour over popped popcorn, mix until well coated. Spray JOLLY TIME® Pop Corn Ball Maker with non-stick cooking spray. Fill larger ball half to the rim with popcorn mixture. Press with smaller half to form a ball or form into a ball with your hands that have been sprayed with non-stick cooking spray. Roll in graham cracker crumbs, if desired. Place on parchment paper or waxed paper; let stand at least 1 hour (they become less sticky as they stand).