If I hadn’t recently seen that [NSFW GIF] with the lady milking that guy with her lady bits, I would not have known that what this scene is actually depicting is a woman skilled in “[pompoir](https://en.wikipedia.org/wiki/Pompoir)”, a highly desired “service” performed by specially trained eastern prostitutes. The scene demonstrates her control over her pelvic floor muscles (pubococcygeus) by being able to “inhale” and “exhale” from the cigarette.
I saw this movie ages ago and never understood *why* they included this scene. I just thought it was bizarre. Now I realize she was advertising her special erotic skill set.
God bless the internet.