This is not a spoof. It is on Silk's official YouTube page.
The video was user-submitted for a competition last year, apparently. (I've been told by a reader. That hasn't been verified.) But, there's no copy about the competition on the Silk channel, nor on the video page. So what it is right now, is an ad for Silk soy milk, approved by Silk.
UPDATE: Silk took the video private, but! we made a copy. It will be back up soon.