I've been trying to think up of some crazy openers so I thought I should share one of my recent ones
Get ready....

So, you see a hot chick, approach her with confidence and say to her,

"Hey there! Here's a quick question for you. What's better? Dust or fluff?"

Now, two things may happen.
One, they will laugh at how stupid it sounds and say, "What are you talking about?"

Then one can answer with something like, "Hey! You're supposed to be taking this question seriously!" Obviously one would say it sarcastically.

Now, if they give an answer coldly (girls with tough bitch shields may respond like this), you can then say, "Wow! You actually gave me an answer! Now, I'm a tough cookie to impress, and you've impressed me with you're answer! So, what's your name?"

If they ask why did you ask such a question, I personally would answer with:
"Well, it's a proven fact that guys are a lot more successful with women with indirect approaches that includes openers that stand out! Now, I'm standing here chatting to you because I used that approach, yet if I approached you like any other loser guy with no experience with women in this room, you would have blown me out and you would not have gotten to know how cool I am as a person!"

Example - Excuse me, I'm a philosophy student in fact I have to be in class in 20 minutes but and I have a very deep question that will change the way you think about your life. (pause) Are you ready?

That is a looong sentence. Goodluck saying that without stuttering or having them walk off in the middle of the convo. It's also a DLV since you're trying to convince them you're cool. Your coolness should be apparent in your tone of voice and posture. Also by setting a hypothetical scenario of yourself being a loser, you give them the ability to make that a reality. They could just say "Well, you are a loser. Later"

sounds a little random but I could see that opening the right group of HBs effectively

wow i am going to have to try that, does it actually work though?