Knock Knock! Let me out!

I've been prepping Sydney for the new baby... telling her how labor works and so forth. Here it is explained to a two year old:

"Your baby brother is in Mommy's belly. Right HERE (point to belly). When it's time for baby to come out, baby will go, "Knock! Knock! Let me out!" (in falsetto baby voice). Then we will go see the doctor and baby will come out to see the doctor!"

Sydney thought about it, and then decided she would role play as the baby. She started yelling (in a falsetto baby voice), "ME OUT! HELP! HELP! STUCK!"

Sydney shows us Mommy's baby......

..... then she shows us where Sydney's baby is!