omg! I saw this just yesterday! My aunt posted it to her profile, and oh my word are those two just so adorable
so cute when they did their little switch-a-roo move then kept right on jammin' away. love it. I hope I'm at least half as fun as that when I get older
ETA: lol, I didn't click on your link b/c I had already seen the video, but when I went to click on it to watch it again-no video! so here is a different link, sorry I don't know how to make it clicky