this shows TREMENDOUS confidence if you can pull it off.
I've done this a few times, It is the most powerful thing I have ever done in a social situation. I simply went up to some guys in a group and start talking to one of them and said.
ME "Hey dya wana play a cool game...

"
GUY "huh?"
ME "it's called... conversation killer

"
...........(from here hes doomed)
they either say "how the fuk you play that?" or "u what?" or "ey??" or nothing
whatever they do you just stare blankly around the group or whatever and sit there in silence for a bit, after a few seconds they crack. and you are stood there with the most confident look in your eyes.
sometimes they go red and pretend they don't know what you are talking about and laugh maybe, "haha just say nothin erm... thats a good one..."
and then continue to make an ass of them selves while you just stand there all glum
see, you still have the power to escape the situation as you've only just walked in and don't know anyone. so you can just walk away, but they either stand there and look stupid and are trapped in the situation or they can escape, leaving you with the girls, (who are now giving you the please fuckme NOW eyes because they are so impressed with you.
This is the most evil obnoxious thing I have done, I've made people leave clubs and go home out of sheer shock and disbelief

Just make sure the girls know that you're doing it to the guys, not them so they can have a laugh with you. and sense your AMOG destroying power and see that you are amazing.
also if your mates see you doing it they will be nervous that you could do iut to them and you will be the leader.
PLEASE can someone else try this and tell me how they went, I want to know if its just my little skill or can anyone do it.