I never really got into the club scene until recently when I discovered house music.

I've noticed a lot of times that I will be dancing and all of a sudden a chick will appear in front of me and start dancing. I can't tell if she wants me to dance with her or not, though I suspect in a couple of cases recently they do (bumping into me, etc).

What's the best way to approach? Say something first then start dancing? Or just start dancing?