Sexy or slutty?

Im thinking about wearing a skirt while sitting a car with a guy friend that i have been flirting with. I know that if i sit in the drivers seat, the angle of the seat will make my skirt ride up a bit. Not to the point where my crotch will be exposed but the skirt will look short. A good part of my thighs will be exposed. It will look like i just have a little piece of fabric covering my crotch. My thighs will be exposed. Is this sexy or trashy. I want to get him interested but dont want to seem like a slut.

Sexy or slutty?
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