What is it?
In a nutshell, the male version of the bitch shield.
How to use it?
Just be a dick during the beginning of interactions. Being a dick can consist of many things. Personally, I use this mostly during night street game. I walk in the middle of the side walk, make people move around me. Cut through groups. Shoulder check lots of females, not hard enough to hurt them, but hard enough to make them notice it. And very rarely check males. Males usually move out of the way before I check them. And I'm not even that big, this month I'm actually scrawny! (But that will change once I hit the gym again)
Actually had a guy apologize to me during the day when I was doing this. He was on his skateboard and I heard him braking with his feet. I just looked at him and he said, "My bad man, my bad." Patted me on the back and left. I kind of felt like a dick lol.
Why use it?
Honestly, when I'm with my buddies, we find it hilarious when we're dicks to strangers. We rarely encourage it, but when it happens, we all crack up. On top of that, I opened up a lot of women that night I was being a dick. I'm usually too much of a puss too.
When to stop using it?
Generally, I stop once the girl IOI's me.
And I'm not saying this is the magic pill for gaming women, or anything like that. If you already have a system that works for you, great! Stick to it. This is just something fun to try. Instead of being all, "HI!!!

:D:D" when you see a hottie, shoulder check her and see what happens, lol.
EDIT: Oh and I forgot to mention. I didn't see my buddy and he approached me from behind and told me that I walk like a badass. Like I owned the campus. And this was my first DAY using my Dick Shield. And I just wanted to make sure what he was saying was true, b/c I don't want to be one of those wanna-be-fags who try to walk tough, or more confident by sticking their chests out, so I looked at myself in a reflection. Good news, I didn't come off as some fag. When you walk with a dick shield, it should feel natural. Once you start forcing it, you'll come off as one of those wanna-be-fags.