I was reading the thread on English as a second language and thought about this. In my novel, I needed the Russian to say "Fuck you" in Russian. And I didn't want to use the Russian alphabet. I found one site that had it so that's what I used.
But I was chatting with someone from Iran the other day. She said the translators don't translate curse words. So I used Google to translate a curse word from English to Farsi. She said it meant something totally different and was not a swear.
So I went to sites that specifically had swear words. They were in the Farsi alphabet so I copied and pasted them and sent them to her. Again, they weren't what the English swear words were. Not even close.
So how do you do what I needed in my novel? (And I wonder what I actually had the Russian saying.)