During my school years, my teacher confiscated a deck of my trading cards and stored them in the classroom drawer. You could probably see where this goes next

During my school years, my teacher confiscated a deck of my trading cards and stored them in the classroom drawer. You could probably see where this goes next - very quickly all my cards were stolen by my classmates, and I could do nothing while I saw my classmates play my own cards, as I had no proof they were mine. That certainly taught me a lesson or two about human nature, at least at that time...