As I’m sitting on the couch, I hear Jacob saying, “Daddy, Dad, Dad, Daddy” and I hear banging on the sliding glass door.  Hayden was outside cooking steaks on the grill, so I thought Jacob was just calling his Daddy and wanted to go outside. What was really happening was that Jacob has learned how to lock and unlock the door–and he locked Hayden outside. The banging on the door was Hayden trying to get my attention to let him in the house!