The act of banning someone for having a surname of "rooster". Again, I will state society introduced the idea of it meaning snake, it's improper to refer to it as slang.
...Really? Not only was the aforementioned user who named himself with the surname "rooster" unbanned after an explanation, but was the whole situation settled until it was blown entirely out of proportion by you.
He was assumed to be trolling because he was not only a new user, but he also set his name to rooster. You're taking it out of context just to use it in your argument.