Ya so, a woman named Sara Gaspar used to work for the University of Notre Dame doing catering for events. Then one paycheque she saw that the school tipped her
$29,387
Of course she thought this was AWESOME (who wouldn't). She payed off all her debts, and even bought a brand NEW car! She said she tried to call the school a few times about the payment but didn't hear back from them. But then just over a month later she received a phone call from the school demanding the money back.
They claim it was a typographical error and was supposed to be $29.87 -
of course it was!!... it's blatantly obvious that the 3 was supposed to
be a period. Just look at the number pad, instead of typing 29.87,
someone hit the "3" key instead of "." and it came out as 29387.

Nevertheless,
Notre Dame filed a lawsuit against her accusing her of fraud,
conversion and unjust enrichment. You can check out the story on
Yahoo.