People who give up and surrender in Ranked.
People who just go like, "GG" when First Blood happens. People who constantly try to persuade the team to surrender. There's no reason to give up or surrender in ranked. There's always a chance to win games. One late game Ace wins you the game. If you have the mentality of just giving up because oh whatever LB got First Blood or something, you shouldn't even be playing ranked.
http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/1858882384/210046661?tab=overview
What happened in this game was that the we had a Master Yi who fed 3 kills to Tryndamere by 10 minutes. A dual mid with Vayne and Akali. Me soloing bot lane with Leona. They had a 7500 gold lead at one point in the game. We were 4 drags behind. But we still won the game by grouping in the end and playing well, ending it 38-29 even. Even trolls want to win.
Don't just give up and be a downer to your entire team. A single mistake from the other team can make the difference between winning and losing.
EDIT: This certainly shouldn't be taken completely literal. There's those 50-5, 4 turrets down games that is definitely a waste of time no matter what.
: "OMG stop wasting my time and vote yes to the ff"
: "No, we're up 5 turrets, an inhibitor, 2 dragons, and tied on kills. Just pull yourself together"
: "Dude, he was gonna afk. We had no choice."