[ There's a few things that Mister LaRusso could mean here-- ]

It's not a date. [ Please, Mister LaRusso!!! ] It's just for fun. She's from some old age--like Victorian England? And she really likes dancing. She's been learning things like the band Queen, new music.

[ Look at how innocent it is! And with this teen trying his best to sell it like a new learning experience for a lady...who may or may not actually be from the Victorian times, Robby doesn't know. But regardless!!! ]