how do you deal with retards?
not a troll question, it's legit.
i had this player who loved 1v5 the enemy team and would always end up dying. he also liked to start dragon/baron objectives at the worst possible moments. also loved to face dive enemy turrets. he was also saying some horrible shit, stuff i cannot even write down because im sure this post will get flagged. at the beginning of the match, everyone was being polite, and everyone understood that maybe this guy wasn't mentally stable. towards late game, people were just flaming him because he seriously lacked about 90% of his brain cells and kept dying over and over.
i guess there's not much you can do right? except report and hope he doesn't reproduce.