Tipping at Subway? FTL.
Lets think about this for a minute...
Tipping the subway chick. When the hell did that start? I honestly don't know. I just remember noticing the clear plastic cup at the register with a piece of paper taped to it that had "tips, thanks!" on it. I spent the next 20 minutes puzzled due to there being a tip jar at Subway. I'm going to say it again - A TIP JAR AT SUBWAY!
I agree with the post above - if they're delivering, sure. If they're just doing their job as they always have, I don't see any reason to randomly start tipping.
However, if you did see nip or a little bewb, or a combination of the two, that definitely deserves a tip. But then again, that's what they do at strip clubs...except it's not free to get in but a dollar gets you a lot more than just a quick glimpse of a nip.
Anyway, if any of you guys think that tipping big will score you the girl you've got another thing coming. All it will do is just cause her to flirt with you more and give you blue balls. If you don't believe me you probably haven't been on this planet very long and/or ever been friends with a waitress.