When I was small I found three dead fish under the tree next to my window and felt spectacularly unsafe and alarmed. Some boogeyman fisherman crept to the tree the night before. Then he took out a protractor and compass and did the most complicated geography to somehow get the fish to lay perfectly straight.

The creepieest line-dead fish ever, because they were mathematically dead. I never left my window open at night after finding the fish, for years and years and years.