Nathan and Kaiden are at home in the mornings for about an hour between when Stacy goes to work and when Nathan has to go to work. Nathan discovered when he would say MaMa to Kaiden he would smile and "talk". But when he would say Daddy, he would stop smiling and stop talking. We thought it was so funny - even if it deflated Daddy's ego a little. (sorry about the quality of the video, I should have had more lights on).