"With", as in "among or in the company of", "the girls". [EDIT] yeah, in context it probably just means handling your partner well while dancing as the surface

"With", as in "among or in the company of", "the girls". [EDIT] yeah, in context it probably just means handling your partner well while dancing as the surface reading, with a possibly-intended somewhat-vulgar "hur hur hur, if you know what I mean" subtext.