The children laugh at their parents' silly explanations of where babies come from, saying things like babies being made from gingerbread or delivered by dinosaurs. Their parents admit they don't really know how babies are made. So the children draw pictures to show their parents the actual process - that mommies have eggs inside and daddies have seeds, and through a tube the seeds can enter the mommy's tummy where they swim to an egg and start growing into a baby.