When the music started, and they initially just stood there, I thought that was going to be the whole routine, them just standing there, heads bowed, waiting. But then that didn't happen.
I watched the first 30 seconds and then I had to turn it off. I felt crawling-out-of-my-skin level of awkward.
I came back today and watched the whole thing. If you turn off the volume, it gets better. They do some pretty badass tumbling at the end if you're into that thing.