Making a girl qualify to you is a good technique to create intrigue and attraction, while you play hard to get so you become a challenge for her.
Lately I try to make girls qualify more and more to me. For example this was via text message:
Her: Do you want to go to party X at day Y? I'm gonna be sooo wasted! I'm now at a birthday party of my cousin btw it's awesome!
Me: That's how I know you you drunk party animal

. So you're having a party right now? I hope you're not drinking too much now. Binch drinking close before an exam is so lame ...
Her: Nonono I'm not drinking a drup of alcohol tonight! I'm going to sleep early so I can study all day tomorrow. X
That's how I do it.
But I still need some improvement here.
Can you guys give a few examples of how you make girls qualify to you? (and subjects where you can make them qualify on)
Which routine or strategy is behind it?