A childhood belief about money

When I was little around the age of 5, my sister took a trip to England, and brought back coins. One day I saw the coins laying on a desk in her room and I took them. That night my sister came in my room and saw her coins on my desk, she came up to me and was like "Those coins!! K.k! Do you know what they are? They will come and kill you!" This of course scared the hell out of me. I asked who was comming and she was like, "the pirates! They are going to come and get you! You stole their gold!" I started crying asking her how to stop them from killing me. She then told me that I had to make a boat, and put the coins in it then go outside and put the boat in the pool. So I went and made a paper boat and put the boat in the pool with the coins in it. Then the next day I went down to the pool, the boat was still floating I grabbed the boat, and in it was a rolled up letter I read it, and it said "next time Ill get you!" So ever since then I believed that if I took coins from ppl then Pirates would come and kill you. I believed that until 2nd grade when I told some kid that because he took a coin off the floor.