i just remembered randomly, it was very common, nobody says it anymore. you killed someone and he called you lucky ? qq .. your opponent blamed his death on jungler ? qq : ) i don't know why it died, it was a nice slang
This originated in Warcraft 3 back in like 2003 because Alt Q+Q would quit the game. The QQ looking like a crying face isn't why it was used. People back in WC3 days would basically be telling you to quit the game because you were a noob, hence giving you the hot keys to quit the game.
IM SO GLAD OTHER PEOPLE KNOW THIS OMG!
I have shared this exact story with so many people I feel more and more like a dinosaur and like I'm the only one that remembers it haha.