Knock Knock

So last night I was laying on the couch and Cameron was sitting next to me. I asked him where the baby was and of course he looked confused. Then I pulled up my shirt and pointed to my belly. I said "the baby is in mommy's belly". So he poked at my belly button and said "baby". Then a few seconds later he put his fist gently on my stomach and said "knock knock"! So funny!