Where did he go?

Karston seems to have a pretty good handle on pregnancy (baby in Mommy's belly) and he knows Cale, our new baby, is part of the family, but I think he's missing some subtle points. This afternoon he stuck his head under my shirt and felt all around. He said ta-tas!!! when he got there. But after a quick inspection, Karston looked at me and asked, Where did baby go? I quickly showed him where Cale was sleeping. Thank goodness there's no return policy like that!