I have done this a few times at the bar and it works pretty well. If there is a long line at the bar you go up to where your target is and say something like wow what do you have to do to get a drink around here. If the girl responds then you know that you are in. I have used this about 3 times and 2 times I got laid and one time two girls bought me and my friend beers. I didn't talk to the ones that got me beer because I was with my girlfriend at the time and that really sucked because the one buying the beer was a 10. My friend is always amazed by how the shitty service line works at bars. It is one way to see if a girl has interest in you because it gives her a chance to respond. Keep in mind that you have to just make the statement and not direct it toward her. She will come to you. Try it out and let me know if it worked for any of you.

a good opener, but that cant be all you said to get laid / the girls to buy you drinks. More detail?

Yeah I put it down as a opener and it does work well. After that the ball is in your court. If a girl does not respond to it then they are not into you. After I use it then I do go into normal game with the Negs and the DHVs. Mainly I use this tool for fishing if I get a bite then that is great if not then I will open with a question. I use this to find common ground with the girl right off the bat because she is sitting there waiting for a drink and thinking the same thing as you are. Sometimes after I use this line I add something like hey I bet it is a lot easier for you to get a drink because you are a chick and then most of the time they offer to buy you a drink. Now you have the girl jumping threw a hoop without even asking and she will feel invested right off the bat and when this happens you don't have to spit as much game. A lot of times girls want you as bad as you want them but most chicks are shy and they won't say hi to you. This method gives them a chance to open to you will be the one being chased right off the bat. It has worked for me many times.

The best way to get opened is peacocking.