I would point out that the word 'twat' in the UK is not a swear word however it's perceived elsewhere, David Cameron, the Prime Minister uses it in speeches, the last time he was talking about twitter and the poet Robert Browning uses it in one of his poems 'Pippa Passes'. However it or how any word is perceived depends on location but you can't blame someone for using a non swear word where he is and it turns out to be a swear/dirty word somewhere else. Look at 'fanny bags' for instance rude here not rude in the US. Perhaps a sticky with words that shouldn't be used, not swear words but words perceived by different people to be, the word 'feck' is used here a lot, it may sound like a swear word but certainly isn't, it's an 'Irishism' one of many words that are cleverly changed for everyday use, it's heard being used by politicians, public figures etc and even royalty here in public. It's an acceptable word here so as I said perhaps a sticky with unacceptable words to all continents.