Don Gorske plans to eat his 25,000th Big Mac on the 39th anniversary of eating his first.
A special ceremony is planned at McDonald's in Fond du Lac Tuesday afternoon.
The 57-year-old Fond du Lac man says he ate nine on May 17, 1972 and has only missed eight days since then, for various reasons. He usually eats two a day.
He has kept most of the boxes or receipts or has made specific notes in calendars that he's kept.
Gorske says he probably has an obsessive-compulsive disorder but he doesn't consider it a problem.
He jokes that 25,000 is a milestone because people didn't think he'd live this long. But he says he recently saw a doctor who said he was in good health and his cholesterol is low.