Funny after it was over but freaky while it happened. In my teens, bow hunting a ~100 acre piece of family land in a Kansas City suburb that until a few years prior had agriculture on 3 sides. A housing addition was in the process of being built not far from the border of the back field and some of the homes had been occupied for at least a year. That area was also known as one of the meth capitals of the world at that point. Meth heads love construction sites btw.
It was the middle of a super windy day so I was still hunting the top side of an fairly deep, but narrow ditch with a creek in the bottom, peeking over the edge every once in a while. Closer to the housing addition, a dirty, but not decomposed, feminine looking hand was sticking out of the silt in one of the bends. My first thought was, Oh ____ I stumbled into a murder scene and "they" may still be around. I stood around watching and contemplating whether to check it out or go get the landowner. Decided that I should at least get close enough to see if there were other pieces or signs before the whole place was shut down. Climbed down the bank far enough away not to disturb the immediate area and walked through the creek towards the hand. Once I got about 5 yards away I could tell that it was actually a manikin hand, not a hacked up woman or kid. Needless to say, I was done for the day but relieved.
I was still pretty weirded out about it when I got home but my brothers thought it was hilarious and I ended up laughing about it too. Don't know if the "hand" washed down the creek from the road, which was at least a mile up, or what but I've always wondered if some of the kids from the housing addition hid it there thinking they were playing an awesome practical joke on whoever found it.