Kenneth Fresh, 34, son of original Pillsbury doughboy Marv 'Poppin'' Fresh, was killed Monday when a startled housewife beat him to death with a broom. 'I was sweeping the kitchen floor and lamenting our family's usual humdrum breakfast biscuits when I heard a strange, high-pitched voice directly behind me,' said a shaken Debbie Combs, 44. 'All he could say was 'Try my new flaky Cres' before my instincts took over and I pounded him with all my might.' Rescue workers frantically poked Fresh for nearly 20 minutes in an effort to revive the doughboy, but were unsuccessful. 