While you might be tempted to view this as Rihanna showing the young'ns how Twerking is done — all respect to Ms. Miley, of course — keep in mind that photos from this shoot first crept out in May, way before the word was enshrined in the Oxford English Dictionary.
In fact there's a huge backstory here, teased in this little Twitter back and forth between director Vincent Haycock and Rihanna:
@vincehaycock luckily none of that matters, just take your name off the check while u at it! Whatever your issue is leave my fans out of it
How's the video itself? Well, it's got pasties, strippers, twerking and a whole lot of content that's probably the unsafe side of NSFW. To summarize the wise man Chazz Michael Michaels, "It's provocative."
