1. A way of writing the Russian word for the adjective "Russian" (русский) in English.
2. A derogatory word to refer to Russians or people of Russian descent. Sometimes extended to refer to other people from the former USSR, such as Belarusians and Ukrainians.
"The goddamn russkies are going to invade Poland if America doesn't bomb them to hell!"
"Your name's Melenkov? What are you some kind of a russki?"
"Actually I'm Ukrainian Jewish."
"Still a russki in my eyes."
A Proverb used to describe a warning that bears no real consequences. Similar to "China's Final Warning" Can also be said as Russian Red Line" if needed.
"Sam said that if I keep playing Destiny, she'll leave me. I swear, it's like the 5th time she said that."
"Ah, sounds like she's giving you a case of Russia's Red Line."