[mikester]

Actually, the battle over who gives who a number is as old as the telephone.

But who cares, just say "hey, I'd like to get to know you better (naked), What can we do to make it happen (naked)?"

Whisper the (naked) part.

Of course I might be kidding...

I don't really think you should give her your number - you seem like the kind of guy who should post a 'missed connection' on Craigslist and see if it pans out.

Or just smile, see if she smiles back - if she does and it isn't busy in the shop try and strike up a conversation with her. If it is busy, try not to be a creep.