Crazy work situation o’ the day:

Woman and child drop off books that child checked out a few weeks ago.  They try to check something else out, only the woman’s card can’t be found in the system.  That’s kind of explainable.  A typo or something could have happened when her account was set up.

Then we give child a library card, only he checked out books on his card a few weeks ago–a card that he didn’t have a few weeks ago.  Same card number that we gave him today had books on it that he returned today.

Impossible, right?  I need to figure out how the impossible happened.  Hmm.