I did a search on this site and google & there isn't much about squinting as it relates to flirting and pick up, but this is the thing that has taken my game to another level of late. Squinting especially coupled with relaxed steady direct eye contact, an leaning your head back to look down at girls a little. Maybe I was doing it before, but certainly not as conciously. It's potent though when you get it.
Many chicks will squint back at you if they are into you espeically if they are confident or comfortable with you. Others will look down submissivly and then quickly look back up ,especially when 1st seeing you or on an open, if you are projecting confidence or value. Make sure you hold and are still looking at them I have found when they look back up , blows them away.
Here are 2 video's as good as I know to describe it.
Squinting. Lots of it by Leto, some even over the top exagerations of it. Check out the squinting at :46 and the tone tilt to the side especially.
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http://www.youtube.com/watch?v=2KO2xxpr118[/youtube]
Now the head tilt back. Cajun from Keys to the VIP nails it. 2:20 on
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http://www.youtube.com/watch?v=ivnXzgFIEvM[/youtube]
If you carry yourself a certain way or sit a certain way, you will get looks from women. I can tell almost instantly now if I see a women is into me. looking at me out the corner of her eye body turned a little, especally and especially if they let themselves be caught doing it. I've also learned to sit now where I look so comfortable I have had girls open me with " you look comfortable". That told me I was doing something right. Walking is where I get the most attention though, these are some ways to get looks so you can try this eye contact.
The squinting is like my bread and butter now. I've even had a couple girls that were so attracted to me like squint and snarl at me or look like they wanted to bite me when I would do this. Very animalistic potent shit.