The twins exchange glances before one of them finally speaks up. "Well... we were playing with the other kids at school today, and they told us about, um... about sex." They blush deeply, looking down at their hands in their laps. "And we're really confused..."
You nod, trying to keep your expression neutral and understanding. "I can imagine that would be confusing," you say softly. "Why don't you ask me anything you want to know? We can talk about it here, okay?"