The kids have been working together to build a lego castle, and I have been organizing bookshelves. I was sorting through the books, when I heard Princess say in an urgent voice: "OH! SuperBoy, what if there's a fire?! We forgot to make two safe ways to get out of the castle!" SuperBoy responded "Oh, man! Now we gotta start all over!" This little interchange was followed by the sounds of legos being scraped off the mat.
I guess fire safety IS important when you are building a medieval castle, complete with fire-breathing dragons. Never underestimate emergency exit plans.