What opener are you using...?
Im trying out a new technique at the minute with shit tests (for girls that continuosly shit test that is), feel free to give it a whirl. I wont bore you with all the details (Im kinda pushed on time too

)
So pretty much after shes giving you a few shit tests (or more than your willing to put up with), I tell her a DHV and then leave.
Now it has to be a very unique DHV. And a massive one too.
E.G., Im actually one of the main "behind the curtain" guys with [famous company of you choice], I have my own jet... etc something massive and outlandish that really really sets you apart from everybody else.
Right after you say that, you get a phone call and have to leave. Obviously those examples are a bit over the top (but you get the idea). Soon as you leave shes gonna be thinking that you are waaaaay out of her league and she starts worrying if she came across as a bitch.
Next time you meet her (and I dont mean an hour later), you can bet your ass shes gonna be very nice to you.
Like I said this is a technique Im working on. So far, Im having mixed results, but the past 4 or 5 times its worked well. Mainly I think with the DHV you really have to make her jaw drop, and then *****instantly***** get out of there before she even really has time to register what you have just said.
If you use it let me know how it worked out.
[side note]- Incase your interested. WHat Im doing at the minute (that seems to be working), is I figure out her goals in life (ie- what college course are you taking) then I think of a massive company in that field and then tell her that Im the one of the main 'behind the scenes guy' in that company. Then soon as I get home I look them up, get a general idea about the company and whos who. Next time I see her, when she asks about my job I throw out tidbits, and then joke "we'r supposed to be having fun, not talking about business".
BTW: no need to say, but dont use this technique on a girl you want to LTR...!!!