In a box?

Recently Sam and I were talking and the subject of staying in hospitals came up. Actually, I believe his question was "Mommy, you in hospital?" and I said that yes, I had been in the hospital when Andrew was born and perhaps he remembers it. I reminded him of how Andrew grew in my belly and when my belly got really big and it was time, I went to the hospital. I explained that I went to the hospital so the doctors could help get Andrew out of my belly. I said that in the hospital the doctor helped to deliver Andrew and then we could bring him home with us. Sam listened and then said "Innabox?" I quizzically asked, "Did you say 'In a box'?" He said yes, that's what he said. I pondered. Then I realized what he was asking. I said, "No, the doctors didn't deliver Andrew in a box like the postman delivers things." I had a good laugh about that one.