Explain it to me like I'm five, properly

You half-understand something and want it made plain without being talked down to. Name the topic and it explains it as if to a sharp twelve-year-old, anchored in one concrete example, then asks you three questions to find where your grasp is actually shaky. The follow-up questions are the useful bit.

Explain [topic] as if to a smart 12-year-old, using one concrete example. Then ask me three questions to test where my understanding is shaky.