How to be sexy and not too sexy

I probably shouldn't be giving advice on flirting (because I hate to) but I can tell you this.

Flirting is flirting, I'd be shocked if there were ever any way to make it appear like you weren't interested. The point of flirting is almost to say that you are interested. Kind of like, when you ask for someone's name, usually you want to know his or her name. When you flirt, you usually have raunchy intentions, maybe not a hook up, but something raunchy.