A toben is a haircut one can choose in the game of Maple Story. Having a toben in real life would mean you have an ugly bowl-type haircut where it seems you have been wearing a toque for a long duration of time. Having a toben can lead to being made fun of, being called ugly, etc.
Mehad: Dude, that guy's hair is so weird.. what is that?
Usman: It's a toben, I feel sorry for him.
Niner Syndrome is when freshmen come to high school and think they're the shit, just because they were the seniors back in middle school last year. Niner Syndrome can result to an unnecessary boost in ego, thinking you're the shit, talking to everyone like you're bigger than them, thinking you're the most important person around, etc.
Alex: Dude, what's with all of the Niners this year?
Dave: They have Niner Syndrome.. but a nice initiation should be the best medicine!