False disqualifiers are GAY, that's why.
In the context of club game, when delivered correctly by a seemingly high-value individual, they can get your foot in the door with a 9/10 by making it seem like you're not actually hitting on her, if that's the way you wanna go.
As far as I'm aware, this is their only legitimate use, and even then, it's A FUCKING LIE. I would STILL go direct because it's more ballsy, honest and it will come off as GENUINE.
Looking at your interaction, you seemed to OPEN with your "neg."
The time to have said "we wouldn't get on" is when you're actually talking with her, you've built a little rapport, and then she mentions something dorky or lame or retarded, and you just make fun of her by saying "omg I can't believe you like Weezer - we would totally never get on."
However, this isn't really a "neg" or a "false disqualifier," it's just teasing and flirting, and showing you're not a pushover and won't just agree with everything she says.
If a girl doesn't "get" that you're negging her, it's probably because you're DOING IT WRONG. Stop negging and just try having a normal fucking conversation where you don't suck up to her and you make fun of her in a flirty way. Learning how to use sexual innuendo will get you laid a lot more than learning how to neg properly
