This isn't one of those major PUA concepts or anything. Essentially its an open ended question. Like, if I use any canned opener now, its to go to girls and say 'Hey, you girls look like you're having the most interesting conversation in here, I can't possibly not be part of it. Watcha talkin about?'

So whilst it is canned (in the sense that I may say the same thing to a few different people), it is also open (in the sense that there is an unlimited range of answers, on an unlimited range of topics).

As I say, I don't claim this is something everyone should do, or some ground breaking concept I've dreamed up. Just something that works for me