"The dance these kids are doing is strictly modern, yet many swing steps come from dances from long ago, for instance: the quick stop. That movement started way back in the days when men were men, even if they did wear lace cuffs and fancy pants."
....and the video is all downhill from there, in a slapstick sort of way.
Love how in so many of these 1940s dance videos they always have at least branches of the American military sartorially represented.