Because if you can't boss anyone around, how can you be sure that you're the boss?
Because I know how old he is.
If this was directed too me: I was just giving advice.
"Dur, I'ma gonna set this kiddo straight, he better be lookin to tha AUTHORITYS"
A person of authority is someone that is in charge or "higher" above you. If he doesn't know what he is doing you look to a person with higher intelligence then him