Domy, I am from Derry/Londonderry in Northern Ireland. What makes you think curse is more of an American idiom for expletives? Some people curse like a trooper, others swear like a trooper... I hear both. And do both
No flame war - I use Londonderry in all official circumstances, Derry on most unofficial situations. I have no problem with anyone wanting to use either, so don't fret about that. In St. Columb's Cathedral there are records of people who fought on both sides during the last siege (the most famous one). People with my surname were killed in action both defending and attacking - we tell the tale that it was a typical 'Dorth' family argument and it got a wee bit out of hand (cannons and such), eventually.
I suppose I do use some American expressions, but this probably comes for having worked with them for many years. But then I do drop in the occasional lackaday forsooth just to confuse people
Oh yes - our family name is Scottish. Myself, little brother and a cousin came over to Stirling in September 1997 to celebrate the 700th anniversary of the battle of Stirling Bridge. Our relatives were there for the original battle. And they refused to hand back a city to a Scottish king who had asked them to look after it while he was busy elsewhere... It is quite funny to look up your family names (both are Scottish) and discover one is reasonably respectable and the entry for the other starts with 'Notorious border raiders and cattle thieves...'. Blame William the Conqueror - he was having an invasion and asked our lot to come along as he heard they were filthy and always up for a good fight.