OMG!  How cuteeeee!  Here's a video of Beyonce rehearsing for her Grammy performance (with a creepy Jay-Z stand in) and towards the end you can here Blue Ivy say "surfboard."  Bey says "Hi Blue Blue" and she starts saying, "Hi Mommy, Hi Mommy."  I mean can you even stand it!  So presh!  And Beyonce's face is just as adorable.  Good thing Blue doesn't know what surfboard really means though. HA!