Very Strange 3v3 game

I was playing a 3v3 game on my level 14 smurf account and everyone else in the game (teammates and opponents) would just run directly at the tower. No big deal, I thought. Everyone is fairly new at the game so I started typing some basic league tips in the chat to help them. They didn't stop doing it however. Also, when I would fight the opponents, they would rarely fight back or even run. They just kept hitting the minions. When I entered the post game lobby, everyone else was already gone. When i saw the builds, I noticed that everyone else in the game bought a hextech sweeper. Their names all start with a short word, followed by the letter "a", followed by a short name, followed by the letter "z" (ex. HighaKeithz). Anyone know what's up?