Again with Iain Banks, In Wasp Factory, towards the end of the first chapter:
"I'm not being silly. I'm not telling you where I am; you'll only tell Angus and he'll tell the police and they'll take me back to the fucking hospital."
"Don't use four-letter words. You know I don't lik them. Of course I won't tell Dad."
"'Fucking' is not a four-letter word. It's... it's a seven-letter word. Isn't that your lucky number?"
I hope this goes through whatever possible censoring-mechanism that this forum might have.