Melissa can get Grady to laugh so hard when she gets in and kisses him on his neck.  i keep trying to get it on video but as soon as i grab the camera he gets bashful and doesn't laugh as hard.  during this video though he made his little eyebrows go up and down and its very funny.  neither of us noticed that he did it when it happened but it is noticeable on the video.  it happens about 45 seconds into the video.  too too funny.