I'm just curious - what do you say instead of the usual four-letter words when you want to swear in front of your kids?
Me, I usually start to say "Shiiiii....ugar!" when I hurt myself. Or I'll use a foreign swear word (which won't be great once my kids are old enough to realise). Or if I want to say something insulting about someone I'll call them a numpty or a nuggethead or a nuff-nuff (dunno why those all start with N though!). Pretty hardcore, huh?
[This is assuming most of us try not to swear in front of our kids!]