It was Memorial Day weekend 2009 and I went out to visit some friends who lived about an hour away from me at the time. We hit the bars on Friday night and while out I mentioned this new thing that I'd heard of called geocaching. One of my friends was intrigued, so the next day we decided to go look for one.
We went to the website and looked up the nearest cache, which happened to be a 4-stage multi in a cemetery! So we wrote down all the info for every stage and then took my car's GPS, as that was the only device we had available, and then walked a few blocks to the site.
The challenge turned out to be much easier than expected, because we immediately found "stage 3" as soon as we got there. The clue had mentioned a last name and him being a Korean War vet. Well, pretty much the first grave we saw had that last name and a little plaque about the Korean War, so we just assumed that was the correct one and went right to Stage 4. We were in fact correct and then found a plastic bag in a tree, which had a piece of paper in it that had been signed by a handful of people, so we assumed that was the cache. It was pretty underwhelming as far as the actual "container", and we had basically skipped the whole puzzle, but somehow still found it enjoyable enough to continue caching.