Bag bag

Aunt Katie hooked Christopher up with a new back pack for Christmas. He LOVES his "bag bag" or sometimes called "back back". And by LOVES, I mean he demands he take it to school and acts like a complete lunatic when we have to put it in the cubby. The saddest part of it is that there isn't even anything in the bag. How obsessed will he be when there's a train, truck, or hot chick's digits in there?