That was great. We have twins... I could so see them doing something like that! oh, wait... I think they have, a few times
That's very well done. Actually, it's done without mirrors. I wondered why the cameraman wasn't visible.
They're saying basically what you'd expect they're saying... "Can you see me in the mirror?" "Yes, I can see you, is there something wrong?" ...stuff like that. Watching it without understanding the words you probably don't really lose much. It's all in the body language and the look on their faces. I guess it does help that the narrator explains up front that it's glass, not a mirror, and the girls are twins, but you figure that out pretty quickly.
I think that one woman, with the large bag with round handles, decided that she was really dead. It was actually sad. I hope they told her the truth, anyway.
Here it is with subtitles http://vids.myspace.com/index.cfm?fuseaction=vids.individual&VideoID=20297462