Oldest hamburger: Preservative-packed McDonald's sandwich bought in 1999 looks exactly the same as the day it was flipped If you need another reason to kick the junk food habit this should do it. A Utah man has unearthed a McDonald's hamburger he bought in 1999 - and the sandwich looks exactly the same as the day it was first flipped. David Whipple kept the fast food meal for a month to show friends how the preservative-packed hamburger would keep its composure. Still going: A Utah man has unearthed a McDonald's hamburger, pictured, he bought in 1999 But he forgot about it, finding it two years later in his coat pocket and then he decided to continue the bizarre experiment. However, even he was shocked to see that the hamburger still looks the same a whopping 14 years later. 'It wasn't on purpose,' Whipple told TV show 'The Doctors,' of his decision to keep the burger for such a long time. Owner: David Whipple, right, save the burger in its original bag, left, for 14 years No more pickle: The pickle disappearing is the only thing that has changed over the years I was showing some people how enzymes work and I thought a hamburger would be a good idea. And I used it for a month and then I forgot about it. 'It ended up in a paper sack in the original sack with the receipt in my coat pocket tossed in the back of my truck and it sat there for, I don't know, two or three months.' He said his coat ended up in the coat closet of his Logan, Utah, home. Owner: David Whipple kept the original receipt, pictured 'My wife didn't discover it until at least a year or two after that,' he said. And we pulled it out and said "oh my gosh. I can't believe it looks the same way."' The burger had no signs of mold, fungus or even a strange odor, the show's hosts said. The only thing that had changed over the years was that the pickle had disintegrated. Whipple, who still has the original receipt for the burger, said he now shows the sandwich to his grandchildren to encourage them to eat healthily. 'It's great for my grand-kids to see. To see what happens with fast food,' he said.