Many many years ago, when I was young and silly, I worked for the Oz branch of a multi-national tyre company. I once typed a letter that was checked by my boss, and by his boss, and I think by HIS boss.....but it still went off to the US advising of the dates of the "Christmas shitdown" instead of the "Christmas shutdown"!

I believe it caused great hilarity on both sides of the Pacific.

Cheers
JennieG