Yeah, go for it! You know what really works well. Sneak up behind her and give her a nice little swat on the ***. Not hard, not too soft, just enough to give her a little rise. Then say to her, "are those space pants you have on?.. because your *** is out of this world." Then, walk away...
She will be swooning over you.
Oh, and you can't do the above if you don't keep serious about it. You have to have a deadpan serious face, and serious voice. If you say it in a timid or humorous way or crack a smile she will think you are a clown and/or a perv. But if you are serious about it then her initial sense of personal violation will be more than overcome with a sense of intrigue and mystery, and it will turn on a little light in her head, get the endorphins running a bit, make her wonder.
Another thing that works well is the Clinton technique, which is to sit next to her, and grab her leg. No, not a timid brush or feeble grasp, but a full on fuckin grope. Not too high on the thigh or you might really offend her... and not too low on the knee where she will wonder what the f*** you are doing. It has to be juuust right, about 4 inches up from the knee. Do it while talking to her, as if you were touching her as many people touch a shoulder or arm to stress a point in your conversation. By timing it right in concert with the conversation you are having with her, she will think of it as a very intriguing "grey area" type move of you to make. And, if you keep a serious face, she will get hot. This one is hard to master.