"Why, Leone, a firefighter does all kinds of wonderful things. They help save kitties when they're stuck in trees! They help people in car accidents. They help put out fires, both in buildings and the woods. Also? They share their toys with people. And they say hello to their friends in Target. They always use good manners and take turns."
Leone, well... he looked at me for a moment, cocked his head a bit to the left and asked, "What do monsters do?"