1. When you know a cultural reference
    I had a kid shocked and amazed that I'd heard of Dr.Dre.
  2. When you don't know an arcane fact
    "How do you say ostrich in Hebrew? What??? You don't know!?!"
  3. When you reveal you know what they're up to
    Yes I can see you texting Gideon I say nothing to spare your dignity. And Kindergardeners; don't talk about Spy Club in room-average voices!!
  4. Any detail of your personal life at all
    "Why weren't you here?" "I was sick" (Child struggles to project complete off-screen humanity to their teacher)
  5. Any form of discipline
    Somehow it's never fair and they never did anything and they can explain why they did it and someone else started it can't you see????