An internet term,(commonly used in the game World Of Warcraft) that describes someone who starts crying or complaining(QQ'ing) which then leads to another person to QQ, which then leads to another person and so on...
Troy: Wtf? I said that I wanted the warlock!
Trevor: No I did! It should be mine!
Travis: Omg! wow you guys suck!
Gabe: All....Aboard the QQ Train!