What was that vocaloid video?

I was browsing memebase one day, and found a video with Vocaloid characters Hatsune Miku and another girl with short green hair. The video was found somewhere on memebase, possibly in the WTF section. The video involved the two of them standing in center stage, followed by I kid you not, their heads twisting around Exorcist style. I know it sounds weird, but I wanted to see the video again, but have no idea where it was. Any help would be greatly appreciated.