Hah!  A few years ago, I was expecting deliver of an very expensive, custom-made mod (a titanium CeeCee).   It showed "Out for Delivery" in the morning.   So I actually met my mail carrier at the mailbox with the expectation of receiving it.   Imagine my disappointment when she didn't have it.    A bit later, the tracking info changed to "Delivered".    WTH?    About half an hour before they closed, I drove to the Post Office with a print-out of the tracking info in hand.  "Hey, this claims it was delivered today, but I don't have it!"      The clerk got the head guy.   He went in the back for a bit, and then came out with the box addressed to me.  "Sorry, we put it on the wrong delivery vehicle this morning."  
