Prompted by this:

http://www.theguardian.com/uk-news/2014/jan/24/whats-the-most-embarrassing-mistake-you-have-made-at-work-cement-victoria

First issue as Editor of a magazine I used to work for... changed the cover at the last minute like a hot-shot ... Massive type face with 'social' written as 'SCIOL' ... apprarentlty it was so wrong the printer assumed it was an acronym!

5,000 print run. :(