So i just joined a game where all 4 other summoners joined the queue and all said "feed"

So i just joined a champ select where all 4 other summoners joined the queue and all said "feed" without saying anything before that. Then they all went clarity and cleanse and they all auto locked mana-less champs locked in and then each of them said they were going bot. Then with 5 seconds left until the game started, one of them said "paint, you should probably just dodge, we all plan on going afk from the beginning of the game." Wtf why would they even join champ select if they plan on doing that?! I only have time for 1 game before I have to get ready for work each day and I don't want that to be the only game I play. So now because of their pre made troll group I dodged and now I run the risk of getting in trouble with leaver buster. My only question is has anyone else had something this weird or troll-ish happen to them right in champ select? or am I just really unlucky?