Here's a good conversation for you:
Me: Hi, Z, how are you?
Z: Good. How's the baby? Can you feel it kicking yet?
Me: Nope, not yet. It's still too small.
Z: Yeah, and you can't feel it kicking right now because it's a lizard.
Me: Huh? A lizard? Are you being silly or serious?
Z: I'm serious! My stepmom is pregnant and I looked at her books and when the baby is too small to kick you it's because it's a lizard.
I always thought those pictures of 6-week-old babies in the womb looked familiar.