I was just about to boat out to find some bears or boars to sling to death, when I clicked on my open inventory and onto the river. Sadly, I clicked on my claim's key, and it dropped into the water. With a sodden 'splosh' I'd lost access to my claim. I sat there staring at the screen, until I decided to build a ram.
So tell me; what was your biggest, stupidest, most regretful mistake you've made in this game?