He's just a kid. And he probably has an adult's permission to be on these forums.
If you guys stop the flaming, and teach him what to do, I'm sure he'd eventually understand the common basics of the forums.
Talk some sense into your little brother, like we are mostly perverted, some grammar national socialists and some of us starfishs.
Chances are some people won't accept the perverted part but its true.
He acts like a Roblox player in my opinion, I hate to say it but Roblox may be better for him and his age Illidan.