I am out of sync, and glad to be, with a world that can even pretend to justify this:

http://www.newsnet14.com/2010/05/16/is-this-dancing-inappropriate-for-8-and-9-year-olds/

It's "safe for work" - just very creepy.

I first saw this a few weeks ago, and immediately thought of it when you posted. It took me a few minutes to find a copy of the video (page two of the article), because Beyonce's copyright folks were all over the YouTube copies. For once, I'm glad they pounced.