"The mother's body pushes it out when it's ready," Bakura replied, absently wringing his hair and the cuffs of his pants out while sending a mental image along the link with Emily-Helen of a woman in labour. It wasn't explicitly graphic but it also didn't leave many questions where the infant was exiting.

Clearly Bakura thought that metaphors weren't necessary if the hatchlings were asking these sorts of questions and since they grasped pretty much everything else they were told with extraordinary intelligence, he didn't figure there was any point in obscuring the facts for their sensibilities.