These are two quick openers I have been trying out, I like them for the most part....
1. There are some girls at the bar, and you walk up to the bar next to them. Your friends are behind you. You look over directly at the group of girls...
You: Hey did you guys want something to drink?
HBs: Umm...yea sure
You: (playfully smile) Oh hi, I didn't mean did YOU guys want drinks, I was actually talking to my friends, I just happened to be looking at you
then order your drinks or whatever, but you have to do it with enough of a playful attitude or it can go in the other direction, the same with any neg...but it is fun
2. This is just a real quick opener. Usually if I am in a fun mood, talking to everyone, and i see a few girls standing around, I approach them and pretend that i think that they work at the bar:
You: Hi!, Yes I'd like a bud light and a captin and coke please! (then i pull out my wallet, i pretend that i really think they work there)
Usually they laugh, then you talk about how funny it is that you actually thought that they worked there and that you just approached them and ordered a drink. then quickly change subjects, go into the next routine. It is pretty fun and has worked well for a quick easy opener...