You: "You know, I saw the most interesting show on the Discovery Channel last night. They were interviewing people who make their living designing attractions for amusement parks like Magic Mountain and Disneyland and Universal Studios. Wouldn't that be a cool way to make a living?" Her: "Yeah! That sounds so interesting." You: "Well, anyway, they were talking about the elements that make up the ideal attraction (sp). They said there are 3 parts to the ideal attraction. First, when you EXPERIENCE the ideal attraction, you FEEL A STATE OF HIGH AROUSAL. The ideal attraction makes your heart beat faster, and your breathing gets faster and you just FEEL THAT AMAZING RUSH all over." Her: "Yeah!" You: "And then they said that another part to an ideal attraction is - it's fascinating. You just FEEL SO ENTHRALLED that you want to TAKE THIS RIDE (point to your pecker!) multiple times; as soon as you GET OFF you want to GET BACK ON again."
You: "And they said, finally, the most important element, is a sense of overall safety. That even though the attraction make look a little dangerous, you're CERTAIN YOU'RE SAFE... you FEEL SAFE because you realise nothing bad can really happen, so that allows you to FEEL TOTALLY FREE to LET GO AND ENJOY THAT GREAT AROUSAL again and again and again. Can you (squeeze her hand) feel _that_... is pretty close to the way it is?"
Ok, this pattern has been reported to make women cum, out of the blue, just by reciting it to them:) Usually though, after you're done with your description, the girl says with a sly smile "Sounded more like making love:)" Don't be shocked, don't stiffen up - for she loved it regardless:) Or rather... exactly because of that:) And if nothing else comes to mind, you can answer with a confused look at first and then a "Well... now that you mention it:)".
Update. You: "When you imagine how much fun it is to ride a roller coaster or any other kind of amusement park ride .. Its like as that ride is climbing up and up, you can feel your heart pounding with excitement, you feel you're breathing faster and faster, sometimes you're even gasping and panting you feel the blood rushing through every part of your body and as that excitement and tension is building and building, you reach the top of the ride and then as it crests, you just release it in a flood of excitement, and sometimes you're screaming you're so turned on.
And you know, afterwards I thought to myself, isn't that the totally accurate description of your ideal attraction to another person. You know that kind of wonderful click right there (right in the center of who you are) that just makes you feel totally drawn to this person and on one hand you feel totally safe and totally comfortable like you were meant to know them and as if you've known them forever."