Quote: I observe/stalk them for a few minutes to see if I can tell if they have a boyfriend/kids/etc.
Then, I'll somehow force an interaction of sorts. Running into each other's carts, grabbing the same food item... Based upon their reaction, I'll strike up a conversation. If they say, 'Watch out you [censored] loser!', then that's probably not the girl for me. But if she makes eye contact, and a smile... then it's game on! Now, if she initiates all that, then you've got it made.