Do you dance with girls or guys

This is a nice way of trying to see if a girl is gay. This is an example of how it has weeded out some girls who like girls.

Shanay: I need to see your ID
Ray: Why do I need to show my ID you need to show your ID?
Shanay: Why would I show you my ID
Ray: Because I need to know you are old enough to ride this ride
Shanay: Ohhhh yeah? *with this look as if is this guy for real?*
Ray:Yeah
Ray: That is if you dance with guys...do you dance with girls or guys?
Shanay: I dance with girls..how did you know I swing that way?
Ray: Any girl who doesn't make out with me within 5 minutes MUST BE GAY.