Yes, but when a girl is practically pressing her face onto the floor with her rear end sticking up with a guy standing behind her swagging, I'd say things are getting out of hand. And yes, that is exactly what happened at my school's prom. xD
That isn't actually getting out of hand. Is anyone without clothes in that situation? Chances are they are fully clothed because, you know, can't have anyone getting pregnant at a prom. AND THAT'S the beauty of dancing; you can have incredibly "sexy" dances but in the end it's for fun, not for gratifying purposes.