Who's Your Daddy?

Harrison is very observant. After observing his mommy (me), call his Daddy (Matt), by his name, he too calls his Daddy, Matt. Well, it's more of a "Mack", but still very cute. I've tried to start calling Matt "Daddy" every time Harrison is around-"Hi Daddy", "We love you Daddy", "Here comes Daddy", etc. To no avail-Harrison looks at me like I am nuts. I can just read his thoughts, "Mom, you got his name wrong again, it's Matt!" He then proceeds to correct me by saying, "Matt!" In this video Harrison was not happy with me at the moment and wanted his Daddy who was at work. He kept whining for "Mack(Matt)".