Unpresidential profanity, parental profanity, constabulary profanity, embroidered profanity, and more:
Icelandic
Fuck yourself up the ass with a Lego brick!
It’s not hard to find guides to multilingual swearing. I own several myself, from Merde! Et Merde Encore! to Mexican Slang: A ¡*#@&%+! Guide. But only one book on my shelf includes brand-name swears: curses from around the world that derive their force from registered trademarks.
Strong Language 