I camped at Marmot Lake in Washington State many years ago. Fires were still OK. I went to pick up firewood and found a perfect little pile of wood near the lake, in a beaten down dirt area where people usually put up their tent. I'm thinking "How thoughtful, firewood left for the next camper."

I bent down, opened my arms and picked up the pile of kindling with outstretched fingers from both hands.

Not so lucky. Someone had taken a "big one" right there and then covered it with the afore mentioned wood. I was left with excrement covered hands just before dinner.