Reminds me of a time my firm was looking at taking over a struggling competitor, and their directors came down to sell the deal to us. While running through the back end procedures they showed us a shortcut they just ran to update the database with external data. I asked him to open it just to see what it did, only to find that is was a bomb intended to shut down the database server, rename all the database files and restart the database server, all the while displaying various fragmentation and reconfiguration messages.
They'd not been paying their developer who decided to get his own back. Needless to say, they deal fell through, and they went bust.
Biting the hand that feeds IT
