Dead give away that the person is still a little boy still trying to figure out what a grown man is, when they say things like that.
Every time you hear "im on my grown man" or "ima rock the grown man look", know that the speaker is nowhere near to being a grown man yet..hence why he's still doing things to "emulate" what he "thinks" grown men do/say/wear/act etc.
He's essentially just "playing house", still.
Look around, you'll never hear one of us grown men say."hey, wanna be grown men today and wear this and that?"
Not sure how much, if at all, this has to do with anyting in this thread.. but the quoted just struck me as kinda ironic..