You went to the Witchlight carnival and didn't buy a ticket. Maybe you found sneaking in more exciting, maybe you didn't have the coin to buy a ticket, or maybe you accidentally got caught up in the pretty lights. In any case, your memories are vague of what happened that day. You had fun that you can remember, but you have lost something. You did get a trinket that you have kept all these years and learned to deal with your "inconvenience".