As you say, in France you sign a 'compromis de vente'. The buyer then has a 10-day cooling-off period, during which time they can pull out of the deal for virtually any reason but then can only withdraw for valid reasons other wise they have to pay at least the normal 10 percent deposit.
Swearing regularly, that some people seem to do in nearly every sentence, surely negates the very impact of using such words. Also I believe that the English language has such an enormous amount of words that using the few swear words regularly shows a poor understanding of our language,