Christmas - Day 3 - Santa's phone number

Last night "Santa" called my husbands cell phone...he wanted to speak to son to see if he had been good and see what he wanted for Christmas...son talked to him for a while and was very happy to talk to him...when they hung up, son said, "Hey daddy, let me see your phone!"  "Why do you need my phone?"  "I bet Santa doesn't know I have a cell phone so I though I'd put his number in my phone so I CAN CALL HIM if I need anything!"