Anonymous wrote:
Supposedly this was improvised and not supposed to be in the movie.
"The story has been passed around for decades, but as the tale goes, the two were just warming up before filming. However, director Emile Ardolino was so enamored with the playfulness of the crawl that he incorporated it into the final film. And thank the cinema gods that he did, because it's one of the greatest examples of on-screen chemistry ever captured."
Read More:
https://www.slashfilm.com/1535732/dirty-dancing-crawl-scene-improvised/