This dovetails to PicturePerfect's post regarding how to deal with the friends. It's a technique that I've done that has had really great success. I call it the Confident AFC.
When my target introduces me to her friends, I immediately do a slight back turn to my target and open up and focus 100% on the friends. Then, as I meet each friend (it could just be one though) I make sure to compliment each friend on something. I never comment on their body or their beauty usually I comment on their taste in clothing or style, even their name.
Then when the introductions are done, and the questions about me begin, I usually put my hand on the small of my target's back to let her know that I still know, and care, that she's there. And that she's still MY girl.
I don't neg the friends, I don't make them jump through hoops, I don't do any of the stuff that one would do to seduce, I'm just nice, witty, and confident.
This technique has been uber powerful for me, so much so that I actually, on at least two occassions that I know of, have had the friends give the target the go ahead to fuck me.
I think the reason that the Confident AFC works so well is that a girl never wants to have to defend her man to her friends. She never wants to have to say 'well he's so sweet when we're together.' So, I remove that dynamic. I show my target the PUA and the friends get the AFC. This way my target gets the best of me, which she will sense, appreciate, and reward with numerous blow jobs.
Finally, I think it's a way of saying that I respect you and your social status, so I'm going to go out of my to make sure that your friends like me.