My colleague tells a tale of the time he was working for a company that prepared and sent mailshots for external clients, to a mix of commercial and private entities in a database. As part of the data cleansing for people, one of the tasks was to perform a find and replace for the word 'The' at the start of names of people and businesses, and putting it at the end, so The Reverend Green would become 'Reverend Green, The' and so on. They got a new member of staff in, and gave him this task.
Unfortunately, said new MoS misunderstood his instructions, and instead of finding and moving 'The ' from the start of company and person names, he just removed the three characters 'the' from all names in the database, and sent them off to print, thinking nothing of it.
The first they knew of it was when one of their clients rang up, very angry, as they had just had a call themselves from a very upset customer demanding to know why they'd sent a letter to their animal therapy company addressed to 'Horse Rapist'.....
(Note: This may be apocryphal, as it is a third hand tale. But it's still damn funny.)