Don Gorske ate his first Big Mac on May 17, 1972. Today, 39 years later, he will eat his 25,000th. Gorske, 57, normally eats two of the McDonald’s classics a day, but has eaten just one on a number of days this year so that he could hit his milestone on the anniversary. The 57-year-old Fond du Lac man says he ate nine on May 17, 1972 and has only missed nine days since then, for various reasons. A celebration will be held this afternoon when Gorske bites into the burger in Fond du Lac, Wis., the AP reports via the Chicago Sun-Times. Conveniently enough, today is also Gorske’s retirement party. Gorske, who has kept track of all the Big Macs he’s consumed because of his obsessive-compulsive disorder, sometimes can’t even taste the sandwiches because the sensitivity of his taste buds fluctuates. At today’s event he will display his receipts and the cartons of 10,000 Big Macs, which are normally stored in bins at his house, according to the Fond du Lac Reporter. Surprisingly, his cholesterol level is a desirable 156 mg/dL. Not surprisingly, the Guinness Book of Records awarded him the record for Most Big Macs Consumed when it verified his 23,000th Big Mac in 2008. “A person like me, I just don’t change too much. It’s pretty much two Big Macs a day. When I can travel to sporting events, I like to take my Big Mac along.”