Not a damned thing. It's 2013, after all.
"Don’t just hit with your arms! Put your hips into it, your hips!"
"How should I put my hips into it? Like this?"
In-context, this was one of the most frightful, horrifying moments of this anime.
Out-of-context, it's just a really not-so-nice thing to do to giant Orange Gatorade-soaked tampon applicator.