So your train has just arrived, you've got about 30 seconds to get on and you're running a tight ship so you can't afford to miss it. However, as the crowds pile out the doors you spot the most gorgeous girl you've seen in a while and lock eyes for a few seconds.

You know you've got to shoot your shot but you've only got about a sentence or two to do so.

What do you say?

I was thinking something like 'Hey, this is completely out of character for me and I've got to run but I just have to say you've got the most lovely [eyes, smile etc], and I'd love to see more of it coffee some time if you'd be up for that. I'm [name] by the way' then if yeah - grab her name and number, if no, gracefully piss off.

Or wouldn't you bother?

I'm looking for a generic line you could whip out almost without thinking in such situations.