If it's a woman just joke with it. Start describing her in a cocky/funny way and give her the sly sexy smile. When you start describing her hands start touching her hands, when you start describing her dress sense start touching her clothing, when you start describing her hair start touching her hair then break rapport when it's obvious and say you like women with messed up teeth, it's a fetish for you(Cause you can't exactly touch her teeth). If she's into it and says "Come on... *giggling*" be Mr.Seduction and start eyeing her lips then say you like a nice smile... nice lips... nice kisser(getting closer and closer).
If it's a chick you really don't want to score just give her a generic answer and move on from it.
If it's a guy who gives a fuck?
