Posted By Yahoo Lifestyle, Tuesday, 17 May 2011 12:36 BST Don Gorske eats on average of two Big Macs a day. The problem is he now sometimes can't taste them. The Wisconsin resident, 57, will eat his 25,000th McDonald's burger on May 17, exactly 39 years after he first tasted a Big Mac in 1972. Gorske, who suffers from obsessive-compulsive disorder, has kept the receipts for every Big Mac he's ever bought and owns 10,000 Big Mac cartons. He also keeps two Big Macs in his luggage just in case he can't find a McDonald's.