Qq

[Couch Potatoe]

Contrary to popular belief, QQ is not a set of crying eyes. It actually originated with the advent of Warcraft II. On battlenet, you could press ALT Q Q to immediately exit the match and program. Thus the term QQ was to tell people to just quit because they are unskilled. The term later developed and lost its origin and is usually mistaken as crying eyes.

In contemporary gamer culture, QQ has become the mainstream emoticon for crying eyes, though it is still often used in its traditional sense.

[Tanya Shivari]

Originally started in Warcraft, where Alt QQ is a hotkey to quiting the game.
When someone bitches or whines everyone would say QQ, telling them to quit the game because they suck so much.
It often confuses people into thinking that it means, Cry more noob, but this is totally incorrect. The fact that QQ looks like a pair of teary eyes is just a mere coincidence.

[PussyCat]

quick question

[Couch Potatoe]

Alt QQ, the keystroke to immediately quit an online multiplayer battle in the game Warcraft 3, and Warcraft 3: The Frozen Throne

[Couch Potatoe]

For modern English speakers, QQ can be used in various ways. It is usually synonimous with crying, or whining:

It can be used as a complete response dismissively. Stop whining and leave. -> QQ
It can be used mockingly. Cry/Whine more -> QQ more.
It can be used as an emote to summarize whimpering or whining. I hate this. T-T -> I hate this. QQ

For English speakers who are out of touch with modern culture (either too old, too FOB, or too noob to know better), QQ is used as abbr of Quick Question.
For people from China, QQ is a commonly known instant messaging service, similar to AIM and MSN.

[Sarah]

basically chinese msn, it has a penguin logo and random games

[Mark Zuckerberg]

There are 3 ways to use it.

1.(popularized by the game warcraft) QQ which means Just quit your bad or just quit
2.QQ as in Quit Crying or your crying. Showing tears(although not the true meaning and orgin of it, that is how some people use it)
3. However in games especially warcraft it means, Stop Crying and Quit...

[Jessica]

QQ means Quick Question.

QQ is just another abbreviation for another word phrase we use in everyday texting life. Just like LOL and BRB.

[Hina Muqadas]

It was explained to me as an emoticon in Nitto Legends
Q(-_-Q)
With the QQ being boxing gloves. People that fight and b*tch and generally should just quit.