On July 7, 1999, David Whipple purchased a Hamburger from a McDonald's in Logan, Utah. After purchasing the burger for a demonstration on deterioration, it some how ended up in his coat pocket where it stayed for many years. After discovering it, he continued to hold onto it and has just unveiled what it looked like after 20 years. The only thing that disintegrated was a pickle. The burger AND bun are still in tact! INSANE!