How do you ask a girl to do it?

I haven't done this sort of thing, yet. But I can tell one from one thing, since I'm a ladies-man, ya know? It's all in the 'hands' and how you say your words, good-sir. If you're good with your hands, know how to massage, know the right words to use, and use appropriate body-gestures along with smiles and winking, I think you'll do fine. If you can't do all of the above, .....may God have mercy on you.