Because the loophole was you could get it back at any time if your parents came down to claim it. And (for me) it was always easier to get it back at the end of

Because the loophole was you could get it back at any time if your parents came down to claim it. And (for me) it was always easier to get it back at the end of the year than to tell my parent, where I would still lose the item (via my parent's revocation) AND catch an extra punishment on top of it.