Mail or Female?

Yesterday, a strange man came to the door. Apparently he used to live here, and he had magically forgotten to give us our mail key. All is well in the world, now that we can get mail. However, having lived here for 8 years, this man DID NOT KNOW which mailbox was his. That's right. 8 years. No clue. Poor man. He was a Newfie, too, so Dad said it wasn't his fault. I don't know. I think you'd have to be from a lot farther away than Newfoundland to not know where your mailbox is (Think Saturn...). Anyways. Desperate to get the mail, Dad sent me out on a mission (apparently, I'm the new kid, therefore, I need to be initiated). I went to THREE different mailbox units (The Canada Post units with like, 60 boxes each). I got to try the key in EVERY SINGLE box....with no luck. I think I have carpal tunnel. Anyways, after I got home, defeated, wet and tired, Dad informed me that he called the neighbour, and found out which mailbox was ours. So simple. Why didn't I think of that?