hmmm yeah i can do a dance thing opener like:
Hey sorry that i bother you but i have to say it: most people dance on the beat but you prefer to dance off the beat, why? ( with a big smile )
she will: Nooo i can dance very well or Noo it isn't or ....
Me: Ok dance again for me, i will watch ( than she dance again a little bit)
Me : hmmm nonononononon still wrong, wait, let's dance together, than it's good

( a little bit touching and coming very close too her)
and than start a conversation or ask her number.
is this good one?
X-L