Mommy: Hey Lina, I have a secret for you.
Lina: What is it?
Mommy: You’re going to be a big sister!
Lina: I am? So there’s a tiny baby in your tummy?
Mommy: Yep, it’s teeny tiny, about this big. But you can’t tell anyone except Daddy, okay? So when Daddy comes up stairs, tell him you’re going to be a big sister.
(Daddy comes upstairs…)
Mommy: Lina, what are you supposed to tell Daddy?
Lina: Mommy has a teeny tiny little baby in her tummy!