Rather than mucking about in a place where you knew you would get a thousand "friendzoned" replies you could actually, y'know ask the girl herself, the chances are she's not exactly gonna flip out and smash your face in with a rolling pin - believe it or not she'll probably prefer that you're being open & honest.
As for the "friend zone" and it's legitimacy, I would suggest to you that it does exist, but that it's banded about all too often as some mythical answer to protect the guys feelings as generally, the real reason she's not hooking up with you is that she doesn't find you attractive.