LMFAO AMA 2011 performance ( Party Rock Anthem – Sexy And I Know It ) – video November 22, 2011 by MezzoJustin Bieber and David Hasslehoff joined in the fun as well.Related posts: Guy Dances to Justin Bieber’s Song at His Wedding – Video Justin Bieber at His Best Mariah Yeater Claims Justin Bieber “fathered” her child Jennifer Lopez – Medley (feat. Pitbull) Live AMA Performance 2011 Justin Bieber is in Malaysia, Tweets that he would be “chillin in the pool” today Caught Cheating With Sexy Girl Prank – Video