I'm Elmo and I know it!

Why is everyone so into LMFAO's song?  I am trying to teach Peyton and Greyson that saying anything like...."I'm pretty and I know it"  "I'm smart and I know it" "I'm athletic and I know it" isn't something that I would ever hope to hear my children say.... but for some reason, this song is what ALL the kids want to sing.... so I found this on you tube and this is what they can listen to when they want to dance and sing!  Plus the twins love it!

http://www.youtube.com/watch?v=RWF86D_UNxc