A word used to discribe a girl who is just a tad bit too under aged for socially acceptable sexual relations, although there are still men who will still perform such an act. Derived from unripe fruit being to "green" to pick.
Guy 1:"God damn!!! if that bitch wasn't so green i would break my fucking dick off in her ass!"
Guy 2:"Bro, I don't give a fuck, i'll still hit that shit!