Having "the talk" with a 2 year old

So, as you remember, I told my five year old last week that babies come out of their mamma's vaginas. Today my two year old and I had a similar conversation. We have a friend who is pregnant, and I explained to Violet that when the baby was big enough, it would come out of her mamma's vagina. Violet responded "ewwwwwwww" and then "Baby humans don't come out of their mamma's vagina's, only baby penguins do!" I have no idea where she got this. I can only assume she has been watching penguin documentaries on PBS without my knowledge.